﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xsi:schemaLocation="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" returnVersion="2011v1.3">
  <ReturnHeader binaryAttachmentCount="0">
    <Timestamp>2012-11-05T08:28:35-06:00</Timestamp>
    <TaxPeriodEndDate>2011-12-31</TaxPeriodEndDate>
    <PreparerFirm>
      <PreparerFirmBusinessName>
        <BusinessNameLine1>KPMG LLP</BusinessNameLine1>
      </PreparerFirmBusinessName>
      <PreparerFirmUSAddress>
        <AddressLine1>1676 International Drive</AddressLine1>
        <City>McLean</City>
        <State>VA</State>
        <ZIPCode>22102</ZIPCode>
      </PreparerFirmUSAddress>
    </PreparerFirm>
    <ReturnType>990</ReturnType>
    <TaxPeriodBeginDate>2011-01-01</TaxPeriodBeginDate>
    <Filer>
      <EIN>131667053</EIN>
      <Name>
        <BusinessNameLine1>AMERICAN INSTITUTE OF PHYSICS INC</BusinessNameLine1>
      </Name>
      <InCareOfName>% RICHARD BACCANTE</InCareOfName>
      <NameControl>AMER</NameControl>
      <Phone>3012093100</Phone>
      <USAddress>
        <AddressLine1>ONE PHYSICS ELLIPSE</AddressLine1>
        <City>COLLEGE PARK</City>
        <State>MD</State>
        <ZIPCode>207403843</ZIPCode>
      </USAddress>
    </Filer>
    <Officer>
      <Name>Richard Baccante</Name>
      <Title>treasurer &amp; CFO</Title>
      <DateSigned>2012-11-01</DateSigned>
      <AuthorizeThirdParty>true</AuthorizeThirdParty>
    </Officer>
    <Preparer>
      <Phone>7032868000</Phone>
    </Preparer>
    <TaxYear>2011</TaxYear>
    <BuildTS>2016-02-24 21:20:13Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCount="11">
    <IRS990 documentId="IRS990" referenceDocumentId="IRS990ScheduleO">
      <NameOfPrincipalOfficerPerson>H FREDERICK DYLLA</NameOfPrincipalOfficerPerson>
      <AddressPrincipalOfficerUS>
        <AddressLine1>ONE PHYSICS ELLIPSE</AddressLine1>
        <City>COLLEGE PARK</City>
        <State>MD</State>
        <ZIPCode>207403843</ZIPCode>
      </AddressPrincipalOfficerUS>
      <GrossReceipts>73650686</GrossReceipts>
      <GroupReturnForAffiliates>false</GroupReturnForAffiliates>
      <Organization501c3>X</Organization501c3>
      <WebSite>WWW.AIP.ORG</WebSite>
      <TypeOfOrganizationCorporation>X</TypeOfOrganizationCorporation>
      <YearFormation>1931</YearFormation>
      <StateLegalDomicile>NY</StateLegalDomicile>
      <ActivityOrMissionDescription>AIP PROMOTES THE ADVANCEMENT OF PHYSICS INCLUDING THE PROMOTION OF RESEARCH IN THE PHYSICAL SCIENCES AND INDUSTRY AND THE DISSEMINATION OF KNOWLEDGE OF PHYSICS AND ITS APPLICATIONS TO HUMAN WELFARE.</ActivityOrMissionDescription>
      <NbrVotingMembersGoverningBody>41</NbrVotingMembersGoverningBody>
      <NbrIndependentVotingMembers>39</NbrIndependentVotingMembers>
      <TotalNbrEmployees>442</TotalNbrEmployees>
      <TotalNbrVolunteers>350</TotalNbrVolunteers>
      <TotalGrossUBI>3553301</TotalGrossUBI>
      <NetUnrelatedBusinessTxblIncome>-169455</NetUnrelatedBusinessTxblIncome>
      <ContributionsGrantsPriorYear>757520</ContributionsGrantsPriorYear>
      <ContributionsGrantsCurrentYear>1003190</ContributionsGrantsCurrentYear>
      <ProgramServiceRevenuePriorYear>60815235</ProgramServiceRevenuePriorYear>
      <ProgramServiceRevenueCY>59434250</ProgramServiceRevenueCY>
      <InvestmentIncomePriorYear>4109586</InvestmentIncomePriorYear>
      <InvestmentIncomeCurrentYear>4177709</InvestmentIncomeCurrentYear>
      <OtherRevenuePriorYear>8752563</OtherRevenuePriorYear>
      <OtherRevenueCurrentYear>9035537</OtherRevenueCurrentYear>
      <TotalRevenuePriorYear>74434904</TotalRevenuePriorYear>
      <TotalRevenueCurrentYear>73650686</TotalRevenueCurrentYear>
      <GrantsAndSimilarAmntsPriorYear>421750</GrantsAndSimilarAmntsPriorYear>
      <GrantsAndSimilarAmntsCY>347402</GrantsAndSimilarAmntsCY>
      <BenefitsPaidToMembersPriorYear>0</BenefitsPaidToMembersPriorYear>
      <BenefitsPaidToMembersCY>0</BenefitsPaidToMembersCY>
      <SalariesEtcPriorYear>37148859</SalariesEtcPriorYear>
      <SalariesEtcCurrentYear>35723983</SalariesEtcCurrentYear>
      <TotalProfFundrsngExpPriorYear>0</TotalProfFundrsngExpPriorYear>
      <TotalProfFundrsngExpCY>0</TotalProfFundrsngExpCY>
      <TotalFundrsngExpCurrentYear>397233</TotalFundrsngExpCurrentYear>
      <OtherExpensePriorYear>38002257</OtherExpensePriorYear>
      <OtherExpensesCurrentYear>37092036</OtherExpensesCurrentYear>
      <TotalExpensesPriorYear>75572866</TotalExpensesPriorYear>
      <TotalExpensesCurrentYear>73163421</TotalExpensesCurrentYear>
      <RevenuesLessExpensesPriorYear>-1137962</RevenuesLessExpensesPriorYear>
      <RevenuesLessExpensesCY>487265</RevenuesLessExpensesCY>
      <TotalAssetsBOY>172112755</TotalAssetsBOY>
      <TotalAssetsEOY>168262314</TotalAssetsEOY>
      <TotalLiabilitiesBOY>45513083</TotalLiabilitiesBOY>
      <TotalLiabilitiesEOY>49928291</TotalLiabilitiesEOY>
      <NetAssetsOrFundBalancesBOY>126599672</NetAssetsOrFundBalancesBOY>
      <NetAssetsOrFundBalancesEOY>118334023</NetAssetsOrFundBalancesEOY>
      <InfoInScheduleOPartIII>X</InfoInScheduleOPartIII>
      <MissionDescription>AIP, A FEDERATION OF 10 PHYSICAL SCIENCE SOCIETIES, PROMOTES THE ADVANCEMENT OF PHYSICS IN GENERAL INCLUDING THE PROMOTION OF RESEARCH IN THE PHYSICAL SCIENCES AND INDUSTRY AND THE DISSEMINATION OF KNOWLEDGE OF PHYSICS AND ITS APPLICATIONS TO HUMAN WELFARE.</MissionDescription>
      <SignificantNewProgramServices>false</SignificantNewProgramServices>
      <SignificantChange>false</SignificantChange>
      <Expense>43028975</Expense>
      <Grants>0</Grants>
      <Revenue>57431211</Revenue>
      <Description>PUBLISHING PROGRAM: AIP PUBLISHES 13 JOURNALS (SOME OF WHICH ARE THE MOST HIGHLY CITED IN THEIR RESPECTIVE FIELDS), 2 MAGAZINES, INCLUDING ITS FLAGSHIP PUBLICATIONS PHYSICS TODAY; AND THE AIP CONFERENCE PROCEEDINGS SERIES. THESE PUBLICATIONS MAINLY FOCUS ON APPLICATIONS OF PHYSICS TO A BROAD ARRAY OF FIELDS AND COMMUNICATE MANY OF THE LATEST BREAKTHROUGHS IN THESE FIELDS TO A DIVERSE INTERNATIONAL AUDIENCE OF READERS. AIP'S ONLINE PLATFORM SCITATION HOSTS NEARLY TWO MILLION ARTICLES FROM MORE THAN 185 SCHOLARY JOURNALS AND OTHER PUBLICATIONS OF 28 LEARNED SOCIETY PUBLISHERS.</Description>
      <Activity2>
        <Expense>7281947</Expense>
        <Grants>164661</Grants>
        <Revenue>2003039</Revenue>
        <Description>PHYSICS RESOURCES CENTER PROGRAMS: IN KEEPING WITH ITS MISSION AND TO FULFILL THE CONSTITUTIONAL MANDATE IN PUBLIC INFORMATION, EDUCATION AND RELATED ACTIVITIES, AIP ESTABLISHED THE PHYSICS RESOURCES CENTER (PRC). PRC OFFERS UNIQUE SERVICES, PRODUCTS, AND EXPERTISE IN: EDUCATION AND STUDENT SERVICES, HISTORY OF PHYSICS, MEDIA AND GOVERNMENT RELATIONS, MAGAZINE PUBLISHING AND EMPLOYMENT SERVICES FOR SCIENCE AND ENGINEERING PROFESSIONALS, STATISTICAL RESEARCH, AND INDUSTRY OUTREACH. WITH THE PURPOSE TO PROMOTE THE PROGRESS AND RELEVANCE OF PHYSICS AND ALLIED FIELDS AND ADVANCE THEIR CONTRIBUTIONS AND RESPONSIVENESS TO SOCIETY, PRC GENERATES, COMMUNICATES AND POPULARIZES KNOWLEDGE, UNIQUE EXPERTISE, AND AUTHORITATIVE INFORMATION FOCUSING ON THE FOLLOWING AUDIENCES: AIP MEMBER SOCIETIES, THEIR INDIVIDUAL MEMBERS, STUDENTS AND THE GENERAL PUBLIC.</Description>
      </Activity2>
      <TotalProgramServiceExpense>50310922</TotalProgramServiceExpense>
      <DescribedIn501C3 referenceDocumentId="IRS990ScheduleA">true</DescribedIn501C3>
      <ScheduleBRequired referenceDocumentId="IRS990ScheduleB">true</ScheduleBRequired>
      <PoliticalActivities referenceDocumentId="IRS990ScheduleC">false</PoliticalActivities>
      <LobbyingActivities referenceDocumentId="IRS990ScheduleC">true</LobbyingActivities>
      <SubjectToProxyTax referenceDocumentId="IRS990ScheduleC">false</SubjectToProxyTax>
      <DonorAdvisedFunds referenceDocumentId="IRS990ScheduleD">false</DonorAdvisedFunds>
      <ConservationEasements referenceDocumentId="IRS990ScheduleD">false</ConservationEasements>
      <CollectionsOfArt referenceDocumentId="IRS990ScheduleD">false</CollectionsOfArt>
      <CreditCounseling referenceDocumentId="IRS990ScheduleD">false</CreditCounseling>
      <TermOrPermanentEndowments referenceDocumentId="IRS990ScheduleD">true</TermOrPermanentEndowments>
      <ReportLandBldgEquip referenceDocumentId="IRS990ScheduleD">true</ReportLandBldgEquip>
      <ReportInvestOthSecurities referenceDocumentId="IRS990ScheduleD">false</ReportInvestOthSecurities>
      <ReportProgRelInvest referenceDocumentId="IRS990ScheduleD">false</ReportProgRelInvest>
      <ReportOtherAssets referenceDocumentId="IRS990ScheduleD">false</ReportOtherAssets>
      <ReportOtherLiabilities referenceDocumentId="IRS990ScheduleD">true</ReportOtherLiabilities>
      <ReportFin48Footnote referenceDocumentId="IRS990ScheduleD">true</ReportFin48Footnote>
      <IndependentAuditFinancialStmt referenceDocumentId="IRS990ScheduleD">false</IndependentAuditFinancialStmt>
      <ConsolidatedAuditFinancialStmt referenceDocumentId="IRS990ScheduleD">true</ConsolidatedAuditFinancialStmt>
      <School>false</School>
      <ForeignOffice>true</ForeignOffice>
      <ForeignActivities referenceDocumentId="IRS990ScheduleF">true</ForeignActivities>
      <MoreThan5000KToOrganizations referenceDocumentId="IRS990ScheduleF">false</MoreThan5000KToOrganizations>
      <MoreThan5000KToIndividuals referenceDocumentId="IRS990ScheduleF">true</MoreThan5000KToIndividuals>
      <ProfessionalFundraising>false</ProfessionalFundraising>
      <FundraisingActivities>false</FundraisingActivities>
      <Gaming>false</Gaming>
      <Hospital>false</Hospital>
      <GrantsToOrganizations referenceDocumentId="IRS990ScheduleI">true</GrantsToOrganizations>
      <GrantsToIndividuals referenceDocumentId="IRS990ScheduleI">true</GrantsToIndividuals>
      <ScheduleJRequired referenceDocumentId="IRS990ScheduleJ">true</ScheduleJRequired>
      <TaxExemptBonds>false</TaxExemptBonds>
      <ExcessBenefitTransaction referenceDocumentId="IRS990ScheduleL">true</ExcessBenefitTransaction>
      <PriorExcessBenefitTransaction referenceDocumentId="IRS990ScheduleL">false</PriorExcessBenefitTransaction>
      <LoanToOfficerOrDQP referenceDocumentId="IRS990ScheduleL">false</LoanToOfficerOrDQP>
      <GrantToRelatedPerson referenceDocumentId="IRS990ScheduleL">false</GrantToRelatedPerson>
      <BsnssRltnshpWithOrganization referenceDocumentId="IRS990ScheduleL">false</BsnssRltnshpWithOrganization>
      <BsnssRltnshpThruFamilyMember referenceDocumentId="IRS990ScheduleL">false</BsnssRltnshpThruFamilyMember>
      <OfficerEntityWithBsnssRltnshp referenceDocumentId="IRS990ScheduleL">false</OfficerEntityWithBsnssRltnshp>
      <DeductibleNonCashContributions>false</DeductibleNonCashContributions>
      <DeductibleContributionsOfArt>false</DeductibleContributionsOfArt>
      <Terminated>false</Terminated>
      <PartialLiquidation>false</PartialLiquidation>
      <DisregardedEntity referenceDocumentId="IRS990ScheduleR">false</DisregardedEntity>
      <RelatedEntity referenceDocumentId="IRS990ScheduleR">true</RelatedEntity>
      <RelatedOrgControlledEntity>true</RelatedOrgControlledEntity>
      <TransactionRelatedEntity referenceDocumentId="IRS990ScheduleR">true</TransactionRelatedEntity>
      <TransfersToExemptNonChrtblOrg referenceDocumentId="IRS990ScheduleR">false</TransfersToExemptNonChrtblOrg>
      <ActivitiesConductedPartnership referenceDocumentId="IRS990ScheduleR">false</ActivitiesConductedPartnership>
      <ScheduleORequired>true</ScheduleORequired>
      <NumberFormsTransmittedWith1096>128</NumberFormsTransmittedWith1096>
      <NumberW2GIncluded>0</NumberW2GIncluded>
      <ComplianceWithBackupWitholding>true</ComplianceWithBackupWitholding>
      <NumberOfEmployees>442</NumberOfEmployees>
      <EmploymentTaxReturnsFiled>true</EmploymentTaxReturnsFiled>
      <UnrelatedBusinessIncome>true</UnrelatedBusinessIncome>
      <Form990-TFiled>true</Form990-TFiled>
      <ForeignFinancialAccount>true</ForeignFinancialAccount>
      <NameOfForeignCountry>CH</NameOfForeignCountry>
      <ProhibitedTaxShelterTrans>false</ProhibitedTaxShelterTrans>
      <TaxablePartyNotification>false</TaxablePartyNotification>
      <NonDeductibleContributions>false</NonDeductibleContributions>
      <QuidProQuoContributions>false</QuidProQuoContributions>
      <Form8282PropertyDisposedOf>true</Form8282PropertyDisposedOf>
      <NumberOf8282Filed>1</NumberOf8282Filed>
      <FundsToPayPremiums>false</FundsToPayPremiums>
      <PremiumsPaid>false</PremiumsPaid>
      <IndoorTanningServices>false</IndoorTanningServices>
      <InfoInScheduleOPartVI>X</InfoInScheduleOPartVI>
      <NbrVotingGoverningBodyMembers>41</NbrVotingGoverningBodyMembers>
      <NumberIndependentVotingMembers>39</NumberIndependentVotingMembers>
      <FamilyOrBusinessRelationship>false</FamilyOrBusinessRelationship>
      <DelegationOfManagementDuties>false</DelegationOfManagementDuties>
      <ChangesToOrganizingDocs>false</ChangesToOrganizingDocs>
      <MaterialDiversionOrMisuse>false</MaterialDiversionOrMisuse>
      <MembersOrStockholders>true</MembersOrStockholders>
      <ElectionOfBoardMembers>true</ElectionOfBoardMembers>
      <DecisionsSubjectToApproval>false</DecisionsSubjectToApproval>
      <MinutesOfGoverningBody>true</MinutesOfGoverningBody>
      <MinutesOfCommittees>true</MinutesOfCommittees>
      <OfficerMailingAddress>false</OfficerMailingAddress>
      <LocalChapters>false</LocalChapters>
      <Form990ProvidedToGoverningBody>true</Form990ProvidedToGoverningBody>
      <ConflictOfInterestPolicy>true</ConflictOfInterestPolicy>
      <AnnualDisclosureCoveredPersons>true</AnnualDisclosureCoveredPersons>
      <RegularMonitoringEnforcement>true</RegularMonitoringEnforcement>
      <WhistleblowerPolicy>true</WhistleblowerPolicy>
      <DocumentRetentionPolicy>true</DocumentRetentionPolicy>
      <CompensationProcessCEO>true</CompensationProcessCEO>
      <CompensationProcessOther>true</CompensationProcessOther>
      <InvestmentInJointVenture>false</InvestmentInJointVenture>
      <StatesWhereCopyOfReturnIsFiled>MD</StatesWhereCopyOfReturnIsFiled>
      <StatesWhereCopyOfReturnIsFiled>NY</StatesWhereCopyOfReturnIsFiled>
      <UponRequest>X</UponRequest>
      <TheBooksAreInCareOf>
        <NamePerson>RICHARD BACCANTE</NamePerson>
        <TelephoneNumber>3012093100</TelephoneNumber>
        <AddressUS>
          <AddressLine1>ONE PHYSICS ELLIPSE</AddressLine1>
          <City>COLLEGE PARK</City>
          <State>MD</State>
          <ZIPCode>207403843</ZIPCode>
        </AddressUS>
      </TheBooksAreInCareOf>
      <InfoInScheduleOPartVII>X</InfoInScheduleOPartVII>
      <Form990PartVIISectionA>
        <NamePerson>LOUIS J LANZEROTTI</NamePerson>
        <Title>GOVERNING BOARD CHAIR</Title>
        <AverageHoursPerWeek>4.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>30000</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>BARRY BARISH</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ROBERT BYER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CURTIS G CALLAN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>KATE KIRBY</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JOSEPH SERENE</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>GENE SPROUSE</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MICHAEL TURNER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MICHAEL D DUNCAN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JANET FENDER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>PAUL L KELLY</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ELIZABETH A ROGAN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ANTHONY ATCHLEY</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MICHAEL MCPHADEN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MARK HAMILTON</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CHARLES E SCHMID</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>DAVID M COOK</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>BETH CUNNINGHAM</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JILL MARSHALL</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>DAVID SOKOLOFF</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CHARLES W CARTER JR</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JUDITH FLIPPEN-ANDERSON</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>G FRITZ BENEDICT</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>KEVIN B MARVEL</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>HERVEY PETER STOCKMAN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>J DANIEL BOURLAND</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>BRUCE H CURRAN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ANGELA R KEYSER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>MORTON M DENN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>DAVID E ASPNES</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>RUDOLF LUDEKE</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>DAVID ERNST</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JAMES HOLLENHORST</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>TIMOTHY A COHN</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>WILLIAM J COOK</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>BRIAN J FRASER</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JAIME FUCUGAUCHI</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JAMES T KIRBY JR</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CHRISTINE MCENTEE</NamePerson>
        <Title>DIRECTOR</Title>
        <AverageHoursPerWeek>1.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <ReportableCompFromOrganization>0</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>H FREDERICK DYLLA</NamePerson>
        <Title>EXECUTIVE DIRECTOR &amp; CEO</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>418147</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>51203</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>BENJAMIN B SNAVELY</NamePerson>
        <Title>CORPORATE SECRETARY</Title>
        <AverageHoursPerWeek>13.0</AverageHoursPerWeek>
        <IndividualTrusteeOrDirector>X</IndividualTrusteeOrDirector>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>55480</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>0</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>RICHARD BACCANTE</NamePerson>
        <Title>TREASURER &amp; CFO</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>259799</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>42570</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>THERESA C BRAUN</NamePerson>
        <Title>VP HUMAN RESOURCES</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>209353</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>30264</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JOHN HAYNES</NamePerson>
        <Title>VP, PUBLISHING</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>386612</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>34743</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CATHERINE O'RIORDAN</NamePerson>
        <Title>VP, PHYSICS RESOURCES</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <Officer>X</Officer>
        <ReportableCompFromOrganization>195873</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>22695</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>EVAN OWENS</NamePerson>
        <Title>CHIEF INFORMATION OFFICER</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <KeyEmployee>X</KeyEmployee>
        <ReportableCompFromOrganization>227053</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>43110</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>RANDOLPH NANNA</NamePerson>
        <Title>PUBLISHER</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <KeyEmployee>X</KeyEmployee>
        <ReportableCompFromOrganization>176278</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>27549</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>LISA MCLAUGHLIN</NamePerson>
        <Title>DIRECTOR, PUBLISHING OPERATION</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <KeyEmployee>X</KeyEmployee>
        <ReportableCompFromOrganization>148723</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>21752</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>ROBERT HARINGTON</NamePerson>
        <Title>PUBLISHER</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>201093</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>18185</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>CATHERINE SWARTZ</NamePerson>
        <Title>CONTROLLER &amp; ASST.TREASURER</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>178493</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>43884</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>JAMES WONDER</NamePerson>
        <Title>DIRECTOR, EMERGING TECHNOLOGY</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>162920</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>42389</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>WENDY MARRIOTT</NamePerson>
        <Title>DIRECTOR, BUSINESS SYS &amp; opS</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>160758</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>42255</OtherCompensation>
      </Form990PartVIISectionA>
      <Form990PartVIISectionA>
        <NamePerson>LORI CARLIN-SIEGEL</NamePerson>
        <Title>DIR,CIRCULATION &amp; FULFILLLMENT</Title>
        <AverageHoursPerWeek>40.0</AverageHoursPerWeek>
        <HighestCompensatedEmployee>X</HighestCompensatedEmployee>
        <ReportableCompFromOrganization>160099</ReportableCompFromOrganization>
        <ReportableCompFromRelatedOrgs>0</ReportableCompFromRelatedOrgs>
        <OtherCompensation>34374</OtherCompensation>
      </Form990PartVIISectionA>
      <TotalReportableCompFromOrg>2970681</TotalReportableCompFromOrg>
      <TotalReportableCompFrmRltdOrgs>0</TotalReportableCompFrmRltdOrgs>
      <TotalOtherCompensation>454973</TotalOtherCompensation>
      <NumberIndividualsGT100K>65</NumberIndividualsGT100K>
      <FormersListed>false</FormersListed>
      <TotalCompGT150K>true</TotalCompGT150K>
      <CompensationFromOtherSources>false</CompensationFromOtherSources>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>KPMG LLP</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>2001 M STREET NW</AddressLine1>
            <City>WASHINGTON</City>
            <State>DC</State>
            <ZIPCode>20036</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>AUDIT AND TAX</DescriptionOfServices>
        <Compensation>112097</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>SABO ASSOCIATES</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>4002 BLUFF STREET</AddressLine1>
            <City>TORRENCE</City>
            <State>CA</State>
            <ZIPCode>90505</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>SALES AGENT</DescriptionOfServices>
        <Compensation>106299</Compensation>
      </ContractorCompensation>
      <ContractorCompensation>
        <NameOfContractor>
          <NamePerson>MADISON ASSOCIATES LLC</NamePerson>
        </NameOfContractor>
        <AddressOfContractor>
          <AddressUS>
            <AddressLine1>316 PENNSYLVANIA AVENUE SE</AddressLine1>
            <City>WASHINGTON</City>
            <State>DC</State>
            <ZIPCode>20003</ZIPCode>
          </AddressUS>
        </AddressOfContractor>
        <DescriptionOfServices>CONSULTING</DescriptionOfServices>
        <Compensation>108890</Compensation>
      </ContractorCompensation>
      <NumberOfContractorsGT100K>3</NumberOfContractorsGT100K>
      <GovernmentGrants>164661</GovernmentGrants>
      <AllOtherContributions>838529</AllOtherContributions>
      <TotalContributions>1003190</TotalContributions>
      <ProgramServiceRevenue>
        <Description>PUBLISHING CENTER</Description>
        <BusinessCode>511120</BusinessCode>
        <TotalRevenueColumn>57431211</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>53877910</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>3553301</UnrelatedBusinessRevenue>
      </ProgramServiceRevenue>
      <ProgramServiceRevenue>
        <Description>PHYSICS RESOURCES CENTER</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>2003039</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>2003039</RelatedOrExemptFunctionIncome>
      </ProgramServiceRevenue>
      <TotalProgramServiceRevenue>59434250</TotalProgramServiceRevenue>
      <InvestmentIncome>
        <TotalRevenueColumn>4177709</TotalRevenueColumn>
        <ExclusionAmount>4177709</ExclusionAmount>
      </InvestmentIncome>
      <IncomeFromInvestBondProceeds>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </IncomeFromInvestBondProceeds>
      <RoyaltiesRevenue>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </RoyaltiesRevenue>
      <NetGainOrLossInvestments>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetGainOrLossInvestments>
      <NetIncomeFromFundraisingEvents>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeFromFundraisingEvents>
      <NetIncomeFromGaming>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeFromGaming>
      <NetIncomeOrLoss>
        <TotalRevenueColumn>0</TotalRevenueColumn>
      </NetIncomeOrLoss>
      <OtherRevenueMisc>
        <Description>PASS THRU COSTS/ MBR SOCIETIES</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>7516754</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>7516754</RelatedOrExemptFunctionIncome>
      </OtherRevenueMisc>
      <OtherRevenueMisc>
        <Description>EQUITY GAIN ON INVESTMENT</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>1263744</TotalRevenueColumn>
        <ExclusionAmount>1263744</ExclusionAmount>
      </OtherRevenueMisc>
      <OtherRevenueMisc>
        <Description>DAY CARE</Description>
        <BusinessCode>900099</BusinessCode>
        <TotalRevenueColumn>254841</TotalRevenueColumn>
        <ExclusionAmount>254841</ExclusionAmount>
      </OtherRevenueMisc>
      <MiscellaneousRevenue>
        <TotalRevenueColumn>198</TotalRevenueColumn>
        <ExclusionAmount>198</ExclusionAmount>
      </MiscellaneousRevenue>
      <TotalOtherRevenue>9035537</TotalOtherRevenue>
      <TotalRevenue>
        <TotalRevenueColumn>73650686</TotalRevenueColumn>
        <RelatedOrExemptFunctionIncome>63397703</RelatedOrExemptFunctionIncome>
        <UnrelatedBusinessRevenue>3553301</UnrelatedBusinessRevenue>
        <ExclusionAmount>5696492</ExclusionAmount>
      </TotalRevenue>
      <GrantsToDomesticOrgs>
        <Total>92239</Total>
        <ProgramServices>92239</ProgramServices>
      </GrantsToDomesticOrgs>
      <GrantsToDomesticIndividuals>
        <Total>222106</Total>
        <ProgramServices>222106</ProgramServices>
      </GrantsToDomesticIndividuals>
      <ForeignGrants>
        <Total>33057</Total>
        <ProgramServices>33057</ProgramServices>
      </ForeignGrants>
      <BenefitsToMembers>
        <Total>0</Total>
      </BenefitsToMembers>
      <CompCurrentOfficersDirectors>
        <Total>2940681</Total>
        <ProgramServices>1658651</ProgramServices>
        <ManagementAndGeneral>1282030</ManagementAndGeneral>
      </CompCurrentOfficersDirectors>
      <CompDisqualPersons>
        <Total>0</Total>
      </CompDisqualPersons>
      <OtherSalariesAndWages>
        <Total>23828876</Total>
        <ProgramServices>17393172</ProgramServices>
        <ManagementAndGeneral>6233533</ManagementAndGeneral>
        <Fundraising>202171</Fundraising>
      </OtherSalariesAndWages>
      <PensionPlanContributions>
        <Total>2502183</Total>
        <ProgramServices>2502183</ProgramServices>
      </PensionPlanContributions>
      <OtherEmployeeBenefits>
        <Total>3997969</Total>
        <ProgramServices>1508330</ProgramServices>
        <ManagementAndGeneral>2420653</ManagementAndGeneral>
        <Fundraising>68986</Fundraising>
      </OtherEmployeeBenefits>
      <PayrollTaxes>
        <Total>2454274</Total>
        <ProgramServices>2454274</ProgramServices>
      </PayrollTaxes>
      <FeesForServicesManagement>
        <Total>0</Total>
      </FeesForServicesManagement>
      <FeesForServicesLegal>
        <Total>183983</Total>
        <ProgramServices>2392</ProgramServices>
        <ManagementAndGeneral>181591</ManagementAndGeneral>
      </FeesForServicesLegal>
      <FeesForServicesAccounting>
        <Total>219935</Total>
        <ProgramServices>6560</ProgramServices>
        <ManagementAndGeneral>213375</ManagementAndGeneral>
      </FeesForServicesAccounting>
      <FeesForServicesLobbying>
        <Total>128121</Total>
        <ProgramServices>128121</ProgramServices>
      </FeesForServicesLobbying>
      <FeesForServicesProfFundraising>
        <Total>0</Total>
      </FeesForServicesProfFundraising>
      <FeesForServicesInvstMgmntFees>
        <Total>75229</Total>
        <ManagementAndGeneral>75229</ManagementAndGeneral>
      </FeesForServicesInvstMgmntFees>
      <FeesForServicesOther>
        <Total>326087</Total>
        <ProgramServices>317238</ProgramServices>
        <ManagementAndGeneral>8849</ManagementAndGeneral>
      </FeesForServicesOther>
      <Advertising>
        <Total>1301742</Total>
        <ProgramServices>1299133</ProgramServices>
        <Fundraising>2609</Fundraising>
      </Advertising>
      <OfficeExpenses>
        <Total>831467</Total>
        <ProgramServices>426139</ProgramServices>
        <ManagementAndGeneral>385857</ManagementAndGeneral>
        <Fundraising>19471</Fundraising>
      </OfficeExpenses>
      <InformationTechnology>
        <Total>2066171</Total>
        <ProgramServices>630888</ProgramServices>
        <ManagementAndGeneral>1432704</ManagementAndGeneral>
        <Fundraising>2579</Fundraising>
      </InformationTechnology>
      <Royalties>
        <Total>0</Total>
      </Royalties>
      <Occupancy>
        <Total>7331543</Total>
        <ProgramServices>31231</ProgramServices>
        <ManagementAndGeneral>7300312</ManagementAndGeneral>
      </Occupancy>
      <Travel>
        <Total>1012545</Total>
        <ProgramServices>778709</ProgramServices>
        <ManagementAndGeneral>224287</ManagementAndGeneral>
        <Fundraising>9549</Fundraising>
      </Travel>
      <TravelEntrtnmntPublicOfficials>
        <Total>0</Total>
      </TravelEntrtnmntPublicOfficials>
      <ConferencesMeetings>
        <Total>883440</Total>
        <ProgramServices>627642</ProgramServices>
        <ManagementAndGeneral>241797</ManagementAndGeneral>
        <Fundraising>14001</Fundraising>
      </ConferencesMeetings>
      <Interest>
        <Total>14987</Total>
        <ManagementAndGeneral>14987</ManagementAndGeneral>
      </Interest>
      <PaymentsToAffiliates>
        <Total>0</Total>
      </PaymentsToAffiliates>
      <DepreciationDepletion>
        <Total>1030966</Total>
        <ProgramServices>437845</ProgramServices>
        <ManagementAndGeneral>593121</ManagementAndGeneral>
      </DepreciationDepletion>
      <Insurance>
        <Total>242155</Total>
        <ManagementAndGeneral>242155</ManagementAndGeneral>
      </Insurance>
      <OtherExpenses>
        <Description>MEMBER SOCIETY PASS THRU</Description>
        <Total>7516754</Total>
        <ProgramServices>7516754</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>EDIT MANAGEMENT</Description>
        <Total>3974536</Total>
        <ProgramServices>3974536</ProgramServices>
      </OtherExpenses>
      <OtherExpenses>
        <Description>PUBLISHING PRINTING</Description>
        <Total>3875221</Total>
        <ProgramServices>3860612</ProgramServices>
        <ManagementAndGeneral>1130</ManagementAndGeneral>
        <Fundraising>13479</Fundraising>
      </OtherExpenses>
      <OtherExpenses>
        <Description>PUBLISHING PRODUCTION</Description>
        <Total>2562285</Total>
        <ProgramServices>2561454</ProgramServices>
        <ManagementAndGeneral>831</ManagementAndGeneral>
        <Fundraising>0</Fundraising>
      </OtherExpenses>
      <AllOtherExpenses>
        <Total>3514869</Total>
        <ProgramServices>1847656</ProgramServices>
        <ManagementAndGeneral>1602825</ManagementAndGeneral>
        <Fundraising>64388</Fundraising>
      </AllOtherExpenses>
      <TotalFunctionalExpenses>
        <Total>73163421</Total>
        <ProgramServices>50310922</ProgramServices>
        <ManagementAndGeneral>22455266</ManagementAndGeneral>
        <Fundraising>397233</Fundraising>
      </TotalFunctionalExpenses>
      <CashNonInterestBearing>
        <BOY>8923646</BOY>
        <EOY>6152890</EOY>
      </CashNonInterestBearing>
      <SavingsAndTempCashInvestments>
        <BOY>10074127</BOY>
        <EOY>17644719</EOY>
      </SavingsAndTempCashInvestments>
      <PledgesAndGrantsReceivable>
        <BOY>81556</BOY>
        <EOY>99688</EOY>
      </PledgesAndGrantsReceivable>
      <AccountsReceivable>
        <BOY>5512745</BOY>
        <EOY>11672280</EOY>
      </AccountsReceivable>
      <ReceivablesFromOfficersEtc>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </ReceivablesFromOfficersEtc>
      <ReceivablesFromDisqualPersons>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </ReceivablesFromDisqualPersons>
      <OtherNotesLoansReceivableNet>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </OtherNotesLoansReceivableNet>
      <InventoriesForSaleOrUse>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </InventoriesForSaleOrUse>
      <PrepaidExpensesDeferredCharges>
        <BOY>856625</BOY>
        <EOY>910440</EOY>
      </PrepaidExpensesDeferredCharges>
      <LandBuildingsEquipmentBasis>20069977</LandBuildingsEquipmentBasis>
      <LandBldgEquipmentAccumDeprec>18827523</LandBldgEquipmentAccumDeprec>
      <LandBuildingsEquipmentBasisNet>
        <BOY>2059394</BOY>
        <EOY>1242454</EOY>
      </LandBuildingsEquipmentBasisNet>
      <InvestmentsPubTradedSecurities>
        <BOY>137655993</BOY>
        <EOY>122504330</EOY>
      </InvestmentsPubTradedSecurities>
      <InvestmentsOtherSecurities>
        <BOY>50000</BOY>
        <EOY>50000</EOY>
      </InvestmentsOtherSecurities>
      <InvestmentsProgramRelated>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </InvestmentsProgramRelated>
      <IntangibleAssets>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </IntangibleAssets>
      <OtherAssetsTotal>
        <BOY>6898669</BOY>
        <EOY>7985513</EOY>
      </OtherAssetsTotal>
      <TotalAssets>
        <BOY>172112755</BOY>
        <EOY>168262314</EOY>
      </TotalAssets>
      <AccountsPayableAccruedExpenses>
        <BOY>9671316</BOY>
        <EOY>10372088</EOY>
      </AccountsPayableAccruedExpenses>
      <GrantsPayable>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </GrantsPayable>
      <DeferredRevenue>
        <BOY>18280244</BOY>
        <EOY>19973071</EOY>
      </DeferredRevenue>
      <TaxExemptBondLiabilities>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </TaxExemptBondLiabilities>
      <EscrowAccountLiability>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </EscrowAccountLiability>
      <LoansFromOfficersDirectors>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </LoansFromOfficersDirectors>
      <MortNotesPyblSecuredInvestProp>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </MortNotesPyblSecuredInvestProp>
      <UnsecuredNotesLoansPayable>
        <BOY>0</BOY>
        <EOY>0</EOY>
      </UnsecuredNotesLoansPayable>
      <OtherLiabilities>
        <BOY>17561523</BOY>
        <EOY>19583132</EOY>
      </OtherLiabilities>
      <TotalLiabilities>
        <BOY>45513083</BOY>
        <EOY>49928291</EOY>
      </TotalLiabilities>
      <FollowSFAS117>X</FollowSFAS117>
      <UnrestrictedNetAssets>
        <BOY>116447234</BOY>
        <EOY>107547763</EOY>
      </UnrestrictedNetAssets>
      <TemporarilyRestrictedNetAssets>
        <BOY>2694935</BOY>
        <EOY>3296146</EOY>
      </TemporarilyRestrictedNetAssets>
      <PermanentlyRestrictedNetAssets>
        <BOY>7457503</BOY>
        <EOY>7490114</EOY>
      </PermanentlyRestrictedNetAssets>
      <TotalNetAssetsFundBalances>
        <BOY>126599672</BOY>
        <EOY>118334023</EOY>
      </TotalNetAssetsFundBalances>
      <TotalLiabNetAssetsFundBalances>
        <BOY>172112755</BOY>
        <EOY>168262314</EOY>
      </TotalLiabNetAssetsFundBalances>
      <InfoInScheduleOPartXI>X</InfoInScheduleOPartXI>
      <ReconcilationRevenueExpenses>487265</ReconcilationRevenueExpenses>
      <ReconcilationOtherChanges>-8752914</ReconcilationOtherChanges>
      <MethodOfAccountingAccrual>X</MethodOfAccountingAccrual>
      <AccountantCompileOrReview>false</AccountantCompileOrReview>
      <FSAudited>true</FSAudited>
      <AuditCommittee>true</AuditCommittee>
      <FinancialStatementConsolidated>X</FinancialStatementConsolidated>
      <FederalGrantAuditRequired>false</FederalGrantAuditRequired>
    </IRS990>
    <IRS990ScheduleA documentId="IRS990ScheduleA">
      <PubliclySupportedOrg509a2>X</PubliclySupportedOrg509a2>
      <GiftsGrantsContribReceived509>
        <CurrentTaxYearMinus4Years>949803</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>3468689</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>648313</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>757520</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>1003190</CurrentTaxYear>
        <Total>6827515</Total>
      </GiftsGrantsContribReceived509>
      <GrossReceiptsFromAdmissions>
        <CurrentTaxYearMinus4Years>61129498</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>62041172</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>62683321</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>60815235</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>59434250</CurrentTaxYear>
        <Total>306103476</Total>
      </GrossReceiptsFromAdmissions>
      <Total509>
        <CurrentTaxYearMinus4Years>62079301</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>65509861</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>63331634</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>61572755</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>60437440</CurrentTaxYear>
        <Total>312930991</Total>
      </Total509>
      <PublicSupportTotal509>312930991</PublicSupportTotal509>
      <GrossInvestmentIncome509>
        <CurrentTaxYearMinus4Years>7925000</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>5188383</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>3030948</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>4109586</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>4177709</CurrentTaxYear>
        <Total>24431626</Total>
      </GrossInvestmentIncome509>
      <InvestmentIncomeAndUBTI>
        <CurrentTaxYearMinus4Years>7925000</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>5188383</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>3030948</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>4109586</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>4177709</CurrentTaxYear>
        <Total>24431626</Total>
      </InvestmentIncomeAndUBTI>
      <OtherIncome509>
        <CurrentTaxYearMinus4Years>9927493</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>9806180</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>7706138</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>8752563</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>9035537</CurrentTaxYear>
        <Total>45227911</Total>
      </OtherIncome509>
      <TotalSupportTotal>
        <CurrentTaxYearMinus4Years>79931794</CurrentTaxYearMinus4Years>
        <CurrentTaxYearMinus3Years>80504424</CurrentTaxYearMinus3Years>
        <CurrentTaxYearMinus2Years>74068720</CurrentTaxYearMinus2Years>
        <CurrentTaxYearMinus1Year>74434904</CurrentTaxYearMinus1Year>
        <CurrentTaxYear>73650686</CurrentTaxYear>
        <Total>382590528</Total>
      </TotalSupportTotal>
      <PublicSupportPercentage509>0.81793</PublicSupportPercentage509>
      <PriorYearSupportPercentage>0.81110</PriorYearSupportPercentage>
      <InvestmentIncomePercentage>0.06386</InvestmentIncomePercentage>
      <PriorYrInvestIncomePercentage>0.07008</PriorYrInvestIncomePercentage>
      <ThirtyThreePercntTestsCY509>X</ThirtyThreePercntTestsCY509>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <ContributorInfo>
        <ContributorNumber>RESTRICTED</ContributorNumber>
        <ContributorNameBusiness>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorNameBusiness>
        <ContributorAddressUS>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorAddressUS>
        <AggregateContributions>RESTRICTED</AggregateContributions>
      </ContributorInfo>
    </IRS990ScheduleB>
    <IRS990ScheduleC documentId="IRS990ScheduleC">
      <TotalGrassrootsLobbying />
      <TotalDirectLobbying />
      <TotalLobbyingExpenditures />
      <OtherExemptPurposeExpenditures />
      <TotalExemptPurposeExpenditures />
      <LobbyingNontaxableAmount />
      <GrassrootsNontaxableAmount />
      <TotLobbyingGrassrootMinusNonTx />
      <TotLobbyExpendMnsLobbyingNontx />
      <Volunteers>true</Volunteers>
      <PaidStaffOrManagement>true</PaidStaffOrManagement>
      <MediaAdvertisements>false</MediaAdvertisements>
      <MailingsMembers>true</MailingsMembers>
      <PublicationsOrBroadcast>false</PublicationsOrBroadcast>
      <GrantsOtherOrganizations>false</GrantsOtherOrganizations>
      <DirectContactLegislators>true</DirectContactLegislators>
      <DirectContactLegislatorsAmount>194350</DirectContactLegislatorsAmount>
      <RalliesDemonstrations>true</RalliesDemonstrations>
      <OtherActivities>false</OtherActivities>
      <TotalLobbyingExpendituresIIB>194350</TotalLobbyingExpendituresIIB>
      <NotDescribedIn501c3>false</NotDescribedIn501c3>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
      <ArtPublicExhibitionAmts />
      <HeldWorksOfArtAmts />
      <CurrentYear>
        <BeginningOfYearBalance>19432716</BeginningOfYearBalance>
        <Contributions>24619</Contributions>
        <InvestmentEarningsOrLosses>-536268</InvestmentEarningsOrLosses>
        <OtherExpenditures>261281</OtherExpenditures>
        <EndOfYearBalance>18659786</EndOfYearBalance>
      </CurrentYear>
      <CurrentYearMinus1Year>
        <BeginningOfYearBalance>17514715</BeginningOfYearBalance>
        <Contributions>63224</Contributions>
        <InvestmentEarningsOrLosses>2141240</InvestmentEarningsOrLosses>
        <OtherExpenditures>286463</OtherExpenditures>
        <EndOfYearBalance>19432716</EndOfYearBalance>
      </CurrentYearMinus1Year>
      <CurrentYearMinus2Years>
        <BeginningOfYearBalance>14026715</BeginningOfYearBalance>
        <Contributions>99289</Contributions>
        <InvestmentEarningsOrLosses>3689029</InvestmentEarningsOrLosses>
        <OtherExpenditures>300318</OtherExpenditures>
        <EndOfYearBalance>17514715</EndOfYearBalance>
      </CurrentYearMinus2Years>
      <CurrentYearMinus3Years>
        <BeginningOfYearBalance>15206884</BeginningOfYearBalance>
        <Contributions>3148568</Contributions>
        <InvestmentEarningsOrLosses>-4103981</InvestmentEarningsOrLosses>
        <OtherExpenditures>224756</OtherExpenditures>
        <EndOfYearBalance>14026715</EndOfYearBalance>
      </CurrentYearMinus3Years>
      <BoardDesignatedEOYBalance>0.49000</BoardDesignatedEOYBalance>
      <PermanentEndowmentEOYBalance>0.40000</PermanentEndowmentEOYBalance>
      <TermEndowmentEOYBalance>0.11000</TermEndowmentEOYBalance>
      <EndowmentsHeldByUnrelatedOrgs>false</EndowmentsHeldByUnrelatedOrgs>
      <EndowmentsHeldByRelatedOrgs>false</EndowmentsHeldByRelatedOrgs>
      <Land />
      <Buildings />
      <LeaseholdImprovements>
        <OtherCostOrOtherBasis>2341709</OtherCostOrOtherBasis>
        <Depreciation>1987129</Depreciation>
        <BookValue>354580</BookValue>
      </LeaseholdImprovements>
      <Equipment>
        <OtherCostOrOtherBasis>14627747</OtherCostOrOtherBasis>
        <Depreciation>13785960</Depreciation>
        <BookValue>841787</BookValue>
      </Equipment>
      <OtherLandBuildings>
        <OtherCostOrOtherBasis>3100521</OtherCostOrOtherBasis>
        <Depreciation>3054434</Depreciation>
        <BookValue>46087</BookValue>
      </OtherLandBuildings>
      <TotalOfBookValueLandBuildings>1242454</TotalOfBookValueLandBuildings>
      <FederalIncomeTaxLiability>0</FederalIncomeTaxLiability>
      <OtherLiabilities>
        <Description>ACCRUED POSTRETIREMENT PLAN BENEFITS</Description>
        <Amount>13051746</Amount>
      </OtherLiabilities>
      <OtherLiabilities>
        <Description>DUE TO MEMBER SOCIETIES</Description>
        <Amount>6531386</Amount>
      </OtherLiabilities>
      <TotalOfAmounts>19583132</TotalOfAmounts>
      <Form990ScheduleDPartXIV>
        <Identifier>SUPPLEMENTAL INFORMATION</Identifier>
        <Explanation>PART V - THE ENDOWMENT FUNDS ARE FOR THE HISTORY CENTER, SOCIETY OF PHYSICS STUDENTS AND SPECIAL PROGRAMS WITHIN THE PHYSICS RESOURCES CENTER AT AIP. PART X - AIP'S ACCOUNTING POLICY FOR EVALUATING UNCERTAIN TAX POSITIONS IS TO RECOGNIZE TAX POSITIONS IF THEY ARE MORE-LIKELY-THAN-NOT OF BEING ULTIMATELY REALIZED. AIP DOES NOT BELIEVE THERE ARE ANY UNRECOGNIZED TAX BENEFITS OR LIABILITIES THAT SHOULD BE RECORDED.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="IRS990ScheduleF">
      <GrantRecordsMaintained>true</GrantRecordsMaintained>
      <AcctsActvsOutUSTable>
        <Region>East Asia and the Pacific</Region>
        <NumberOfOffices>1</NumberOfOffices>
        <NumberOfEmployees>1</NumberOfEmployees>
        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>LIAISON OFFICE</SpecificServicesProvided>
        <TotalExpenditures>191243</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>East Asia and the Pacific</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <TypeOfActivitiesConducted>Grantmaking</TypeOfActivitiesConducted>
        <SpecificServicesProvided>N/A</SpecificServicesProvided>
        <TotalExpenditures>3204</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe (Including Iceland and Greenland)</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <TypeOfActivitiesConducted>Grantmaking</TypeOfActivitiesConducted>
        <SpecificServicesProvided>N/A</SpecificServicesProvided>
        <TotalExpenditures>24982</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>North America</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <TypeOfActivitiesConducted>Grantmaking</TypeOfActivitiesConducted>
        <SpecificServicesProvided>N/A</SpecificServicesProvided>
        <TotalExpenditures>480</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>South America</Region>
        <NumberOfOffices>0</NumberOfOffices>
        <TypeOfActivitiesConducted>Grantmaking</TypeOfActivitiesConducted>
        <SpecificServicesProvided>N/A</SpecificServicesProvided>
        <TotalExpenditures>4390</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <SubtotalNumberOfOffices>1</SubtotalNumberOfOffices>
      <SubtotalNumberOfEmployees>1</SubtotalNumberOfEmployees>
      <TotalNumberOfOffices>1</TotalNumberOfOffices>
      <TotalNumberOfEmployees>1</TotalNumberOfEmployees>
      <SubtotalAmountSpent>224299</SubtotalAmountSpent>
      <TotalAmountSpent>224299</TotalAmountSpent>
      <GrantsToIndOutsideUS>
        <TypeOfAssistance>PHYSICS ACHIEVEMENTS</TypeOfAssistance>
        <Region>Europe/Iceland/Greenland</Region>
        <NumberOfRecipients>14</NumberOfRecipients>
        <AmountOfCashGrant>24982</AmountOfCashGrant>
        <MannerOfCashDisbursement>CHECK</MannerOfCashDisbursement>
      </GrantsToIndOutsideUS>
      <GrantsToIndOutsideUS>
        <TypeOfAssistance>PHYSICS ACHIEVEMENTS</TypeOfAssistance>
        <Region>East Asia/Pacific</Region>
        <NumberOfRecipients>3</NumberOfRecipients>
        <AmountOfCashGrant>3204</AmountOfCashGrant>
        <MannerOfCashDisbursement>CHECK</MannerOfCashDisbursement>
      </GrantsToIndOutsideUS>
      <GrantsToIndOutsideUS>
        <TypeOfAssistance>PHYSICS ACHIEVEMENTS</TypeOfAssistance>
        <Region>North America</Region>
        <NumberOfRecipients>1</NumberOfRecipients>
        <AmountOfCashGrant>480</AmountOfCashGrant>
        <MannerOfCashDisbursement>CHECK</MannerOfCashDisbursement>
      </GrantsToIndOutsideUS>
      <GrantsToIndOutsideUS>
        <TypeOfAssistance>PHYSICS ACHIEVEMENTS</TypeOfAssistance>
        <Region>South America</Region>
        <NumberOfRecipients>4</NumberOfRecipients>
        <AmountOfCashGrant>4390</AmountOfCashGrant>
        <MannerOfCashDisbursement>CHECK</MannerOfCashDisbursement>
      </GrantsToIndOutsideUS>
      <TransferToForeignCorp>false</TransferToForeignCorp>
      <InterestInForeignTrust>false</InterestInForeignTrust>
      <OwnForeignCorp>false</OwnForeignCorp>
      <PassiveForeignInvestCo>false</PassiveForeignInvestCo>
      <ForeignPartnership>false</ForeignPartnership>
      <BoycottCountries>false</BoycottCountries>
      <Form990ScheduleFPartV>
        <Identifier>SUPPLEMENTAL INFORMATION</Identifier>
        <Explanation>AIP HAS ESTABLISHED AND FOLLOWS DOCUMENTED POLICIES AND PROCEDURES TO MONITOR, EVALUATE AND REVIEW ALL TYPES OF GRANTS, AWARDS AND ASSISTANCE ON A REGULAR BASIS.</Explanation>
      </Form990ScheduleFPartV>
      <Form990ScheduleFPartV>
        <Identifier>SCHEDULE F, PART I, COLUMN F</Identifier>
        <Explanation>THE ACCOUNTING METHOD USED FOR THE EXPENDITURES SHOWN IS THE ACCRUAL BASIS.</Explanation>
      </Form990ScheduleFPartV>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="IRS990ScheduleI">
      <RecordsMaintained>true</RecordsMaintained>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>GEORGE WASHINGTON UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>PO BOX 85</AddressLine1>
          <City>WASHINGTON</City>
          <State>DC</State>
          <ZIPCode>20055</ZIPCode>
        </AddressUS>
        <EINOfRecipient>530196584</EINOfRecipient>
        <IRCSection>501(C)(3)</IRCSection>
        <AmountOfCashGrant>28788</AmountOfCashGrant>
        <PurposeOfGrant>INTERN HOUSING</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>HARRY RANSOM CENTER</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>PO BOX 7219</AddressLine1>
          <City>AUSTIN</City>
          <State>TX</State>
          <ZIPCode>78713</ZIPCode>
        </AddressUS>
        <EINOfRecipient>746000203</EINOfRecipient>
        <IRCSection>501(C)(3)</IRCSection>
        <AmountOfCashGrant>10000</AmountOfCashGrant>
        <PurposeOfGrant>CATALOG FAMILY PAPERS</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>STANFORD UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>PO BOX 44253</AddressLine1>
          <City>SAN FRANCISCO</City>
          <State>CA</State>
          <ZIPCode>94144</ZIPCode>
        </AddressUS>
        <EINOfRecipient>941156365</EINOfRecipient>
        <IRCSection>501(C)(3)</IRCSection>
        <AmountOfCashGrant>19685</AmountOfCashGrant>
        <PurposeOfGrant>PRESERVE DOCUMENTS</PurposeOfGrant>
      </RecipientTable>
      <TotalNbrOf501C3AndGovtGrants>3</TotalNbrOf501C3AndGovtGrants>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>TRAVEL AND MEETING EXPENSES</TypeOfGrant>
        <NumberOfRecipients>40</NumberOfRecipients>
        <AmountOfCashGrant>21414</AmountOfCashGrant>
        <AmountOfNonCashAssistance>650</AmountOfNonCashAssistance>
        <MethodOfValuation>FMV</MethodOfValuation>
        <DescriptionOfNonCashAssistance>PENS</DescriptionOfNonCashAssistance>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>SCHOLARSHIPS AND AWARDS FOR SPS MEMBERS</TypeOfGrant>
        <NumberOfRecipients>36</NumberOfRecipients>
        <AmountOfCashGrant>39680</AmountOfCashGrant>
        <MethodOfValuation>N/A</MethodOfValuation>
        <DescriptionOfNonCashAssistance>N/A</DescriptionOfNonCashAssistance>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>AWARDS FOR OUTSTANDING ACHIEVEMENTS</TypeOfGrant>
        <NumberOfRecipients>4</NumberOfRecipients>
        <AmountOfCashGrant>16519</AmountOfCashGrant>
        <MethodOfValuation>N/A</MethodOfValuation>
        <DescriptionOfNonCashAssistance>N/A</DescriptionOfNonCashAssistance>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>ORAL HISTORY INTERVIEWS AND RESEARCH PROJECTS</TypeOfGrant>
        <NumberOfRecipients>11</NumberOfRecipients>
        <AmountOfCashGrant>7548</AmountOfCashGrant>
        <MethodOfValuation>N/A</MethodOfValuation>
        <DescriptionOfNonCashAssistance>N/A</DescriptionOfNonCashAssistance>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>SCIENCE WRITING AWARDS</TypeOfGrant>
        <NumberOfRecipients>4</NumberOfRecipients>
        <AmountOfCashGrant>12000</AmountOfCashGrant>
        <AmountOfNonCashAssistance>529</AmountOfNonCashAssistance>
        <MethodOfValuation>FMV</MethodOfValuation>
        <DescriptionOfNonCashAssistance>ENGRAVED CHAIR</DescriptionOfNonCashAssistance>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>CONGRESSIONAL &amp; US STATE DEPT FELLOWSHIPS</TypeOfGrant>
        <NumberOfRecipients>4</NumberOfRecipients>
        <AmountOfCashGrant>123765</AmountOfCashGrant>
        <MethodOfValuation>N/A</MethodOfValuation>
        <DescriptionOfNonCashAssistance>N/A</DescriptionOfNonCashAssistance>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIV>
        <Identifier>SUPPLEMENTAL INFORMATION</Identifier>
        <Explanation>AIP HAS ESTABLISHED AND FOLLOWS DOCUMENTED POLICIES AND PROCEDURES TO MONITOR, EVALUATE AND REVIEW ALL TYPES OF GRANTS, AWARDS AND ASSISTANCE ON A REGULAR BASIS.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <FirstClassOrCharterTravel>X</FirstClassOrCharterTravel>
      <TravelForCompanions>X</TravelForCompanions>
      <WrittenPolicyReTAndEExpenses>true</WrittenPolicyReTAndEExpenses>
      <SubstantiationRequired>true</SubstantiationRequired>
      <CompensationCommittee>X</CompensationCommittee>
      <IndependentConsultant>X</IndependentConsultant>
      <Form990OfOtherOrganizations>X</Form990OfOtherOrganizations>
      <CompensationSurvey>X</CompensationSurvey>
      <SeverancePayment>false</SeverancePayment>
      <SupplementalNonqualRetirePlan>false</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>false</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>false</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>false</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>false</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>false</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>false</AnyNonFixedPayments>
      <InitialContractException>false</InitialContractException>
      <Form990ScheduleJPartII>
        <NamePerson>H FREDERICK DYLLA</NamePerson>
        <BaseCompensationFilingOrg>400915</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>17232</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>24500</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>26703</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>469350</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>RICHARD BACCANTE</NamePerson>
        <BaseCompensationFilingOrg>251379</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>5000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>3420</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>24500</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>18070</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>302369</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>THERESA C BRAUN</NamePerson>
        <BaseCompensationFilingOrg>207613</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1740</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>20530</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>9734</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>239617</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>JOHN HAYNES</NamePerson>
        <BaseCompensationFilingOrg>312061</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>60460</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>14091</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>24500</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>10243</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>421355</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>CATHERINE O'RIORDAN</NamePerson>
        <BaseCompensationFilingOrg>194133</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1740</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>19910</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>2785</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>218568</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>EVAN OWENS</NamePerson>
        <BaseCompensationFilingOrg>194053</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>33000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>17372</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>25738</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>270163</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>RANDOLPH NANNA</NamePerson>
        <BaseCompensationFilingOrg>174788</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1490</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>17940</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>9609</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>203827</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>LISA MCLAUGHLIN</NamePerson>
        <BaseCompensationFilingOrg>148723</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>11804</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>9948</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>170475</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>ROBERT HARINGTON</NamePerson>
        <BaseCompensationFilingOrg>165093</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>36000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>0</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>16799</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>1386</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>219278</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>CATHERINE SWARTZ</NamePerson>
        <BaseCompensationFilingOrg>172753</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>4000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1740</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>18264</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>25620</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>222377</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>JAMES WONDER</NamePerson>
        <BaseCompensationFilingOrg>162115</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>325</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>480</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>16817</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>25572</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>205309</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>WENDY MARRIOTT</NamePerson>
        <BaseCompensationFilingOrg>160278</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>0</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>480</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>16683</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>25572</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>203013</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartII>
        <NamePerson>LORI CARLIN-SIEGEL</NamePerson>
        <BaseCompensationFilingOrg>150839</BaseCompensationFilingOrg>
        <CompBasedOnRelatedOrgs>0</CompBasedOnRelatedOrgs>
        <BonusFilingOrg>8000</BonusFilingOrg>
        <BonusRelatedOrgs>0</BonusRelatedOrgs>
        <OtherCompensationFilingOrg>1260</OtherCompensationFilingOrg>
        <OtherCompensationRelatedOrgs>0</OtherCompensationRelatedOrgs>
        <DeferredCompFilingOrg>16770</DeferredCompFilingOrg>
        <DeferredCompRelatedOrgs>0</DeferredCompRelatedOrgs>
        <NontaxableBenefitsFilingOrg>17604</NontaxableBenefitsFilingOrg>
        <NontaxableBenefitsRelatedOrgs>0</NontaxableBenefitsRelatedOrgs>
        <TotalCompensationFilingOrg>194473</TotalCompensationFilingOrg>
        <TotalCompensationRelatedOrgs>0</TotalCompensationRelatedOrgs>
        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
      </Form990ScheduleJPartII>
      <Form990ScheduleJPartIII>
        <Identifier>FIRST CLASS TRAVEL</Identifier>
        <ReturnReference>PART I, LINE 1A</ReturnReference>
        <Explanation>DUE TO A MEDICAL CONDITION, FIRST CLASS TRAVEL WAS NOT TREATED AS TAXABLE COMPENSATION TO JOHN HAYNES.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>TRAVEL FOR COMPANIONS</Identifier>
        <ReturnReference>PART I, LINE 1A</ReturnReference>
        <Explanation>THE COST OF SPOUSE TRAVEL FOR MR. DYLLA'S WIFE WAS TREATED AS ADDITIONAL COMPENSATION.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>ESTABLISH CEO COMPENSATION</Identifier>
        <ReturnReference>PART I, LINE 3</ReturnReference>
        <Explanation>ON AN ANNUAL BASIS AIP RETAINS A COMPENSATION CONSULTING FIRM TO REVIEW THE CURRENT COMPENSATION OF THE CEO, WHICH INCLUDES DETAILED COMPARISONS WITH COMPARABLY SIZED NOT-FOR-PROFIT ORGANIZATIONS AS WELL AS SELECTED PEER SCIENTIFIC AND ENGINEERING ORGANIZATIONS. THIS INFORMATION IS REVIEWED BY THE VICE PRESIDENT OF HUMAN RESOURCES AND THE CHAIR OF THE GOVERNING BOARD OF AIP. THE CHAIR THEN DISCUSSES IT WITH THE EXECUTIVE COMMITTEE OF THE GOVERNING BOARD WHO MAKES THE FINAL DECISION OF THE COMPENSATION FOR THE CEO. COMPENSATION FOR THE CEO IS DISCUSSED AND DOCUMENTED DURING THE EXECUTIVE SESSION OF AIP'S BOARD MEETINGS.</Explanation>
      </Form990ScheduleJPartIII>
    </IRS990ScheduleJ>
    <IRS990ScheduleL documentId="IRS990ScheduleL">
      <DQPTable>
        <NamePerson>THERESA C BRAUN</NamePerson>
        <DescriptionOfTransaction>PERSONAL USE OF CORPORATE CREDIT CARD</DescriptionOfTransaction>
        <TransactionCorrected>true</TransactionCorrected>
      </DQPTable>
      <AmountOfTaxImposed>911</AmountOfTaxImposed>
    </IRS990ScheduleL>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 6</Identifier>
        <Explanation>AIP IS A NON-STOCK, NON-PROFIT MEMBERSHIP CORPORATION.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 7A</Identifier>
        <Explanation>EACH OF AIP TEN MEMBER SOCIETIES MAY ELECT ONE OR MORE MEMBERS TO AIP GOVERNING BOARD.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 11A</Identifier>
        <Explanation>THE FORM 990 IS PREPARED AND REVIEWED BY THE ORGANIZATION'S INDEPENDENT ACCOUNTING FIRM WITH ASSISTANCE FROM AIP'S SENIOR MANAGEMENT. THE FORM 990 IS THEN REVIEWED BY THE AUDIT COMMITTEE AND THEN MADE AVAILABLE TO ALL MEMBERS OF THE GOVERNING BOARD PRIOR TO FILING.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 12C</Identifier>
        <Explanation>EACH YEAR A CONFLICT OF INTEREST FORM IS COMPLETED BY ALL REQUIRED INDIVIDUALS. THE SECRETARY OF AIP REVIEWS AND EVALUATES IF THERE IS ANY CONFLICT OF INTEREST AND ITS IMPACT TO THE ORGANIZATION.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 15A</Identifier>
        <Explanation>ON AN ANNUAL BASIS AIP RETAINS A COMPENSATION CONSULTING FIRM TO REVIEW THE CURRENT COMPENSATION OF THE CEO, WHICH INCLUDES DETAILED COMPARISONS WITH COMPARABLY SIZED NOT-FOR-PROFIT ORGANIZATIONS AS WELL AS SELECTED PEER SCIENTIFIC AND ENGINEERING ORGANIZATIONS. THIS INFORMATION IS REVIEWED BY THE VICE PRESIDENT OF HUMAN RESOURCES AND THE CHAIR OF THE GOVERNING BOARD OF AIP. THE CHAIR THEN DISCUSSES IT WITH THE EXECUTIVE COMMITTEE OF THE GOVERNING BOARD WHO MAKES THE FINAL DECISION OF THE COMPENSATION FOR THE CEO. COMPENSATION FOR THE CEO IS DISCUSSED AND DOCUMENTED DURING THE EXECUTIVE SESSION OF AIP'S BOARD MEETINGS.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 15B</Identifier>
        <Explanation>BIANNUALLY AIP RETAINS A COMPENSATION CONSULTING FIRM TO REVIEW THE CURRENT COMPENSATION OF THE FOUR OPERATING OFFICERS. THE REPORT INCLUDES DETAILED COMPARISONS WITH COMPARABLY SIZED NOT-FOR-PROFIT ORGANIZATIONS AND SELECTED PEER SCIENTIFIC AND ENGINEERING ORGANIZATIONS THIS INFORMATION IS REVIEW BY THE VICE PRESIDENT OF HUMAN RESOURCES AND CEO. THE CEO MAKES A RECOMMENDATION TO THE COMPENSATION COMMITTEE FOR APPROVAL. PERIODICALLY THIS PROCESS IS DONE FOR KEY EMPLOYEES AND IS REVIEWED AND APPROVED BY THE MANAGEMENT COMMITTEE. THE DELIBERATIONS ARE DOCUMENTED IN THE MINUTES.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART VI, LINE 19</Identifier>
        <Explanation>AIP WEBSITE HAS A GOVERNANCE SECTION THAT INCLUDES THE GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY. ALSO, ON THE WEBSITE ARE ANNUAL REPORTS THAT INCLUDE FINANCIAL HIGHLIGHTS FOR AIP.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>990 CORE PART XI, LINE 5</Identifier>
        <ReturnReference>OTHER CHANGES IN NET ASSETS OR FUND BALANCES:</ReturnReference>
        <Explanation>UNREALIZED GAIN (LOSS) (7,816,126) FASB ADOPTION POST RETIREMENT PLANS (936,789) ROUNDING 1 ----------- TOTAL (8,752,914)</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>PHYSICS CONFERENCES INCORPORATED</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>ONE PHYSICS ELLIPSE</AddressLine1>
          <City>COLLEGE PARK</City>
          <State>MD</State>
          <ZIPCode>20740</ZIPCode>
        </AddressUS>
        <EIN>522205188</EIN>
        <PrimaryActivities>CONFERENCES</PrimaryActivities>
        <LegalDomicileState>DE</LegalDomicileState>
        <ExemptCodeSection>501(c)(3)</ExemptCodeSection>
        <PublicCharityStatus>9</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>AIP</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>true</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>AMERICAN CENTER FOR PHYSICS</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>ONE PHYSICS ELLIPSE</AddressLine1>
          <City>COLLEGE PARK</City>
          <State>MD</State>
          <ZIPCode>20740</ZIPCode>
        </AddressUS>
        <EIN>521712905</EIN>
        <PrimaryActivities>BUILDING</PrimaryActivities>
        <LegalDomicileState>MD</LegalDomicileState>
        <ExemptCodeSection>501(c)(3)</ExemptCodeSection>
        <PublicCharityStatus>11B</PublicCharityStatus>
        <DirectControllingEntityName>
          <BusinessNameLine1>NA</BusinessNameLine1>
        </DirectControllingEntityName>
        <ControlledOrg>false</ControlledOrg>
      </Form990ScheduleRPartII>
      <Form990ScheduleRPartIV>
        <NameOfRelatedOrg>
          <BusinessNameLine1>AIP GLOBAL INC</BusinessNameLine1>
        </NameOfRelatedOrg>
        <AddressUS>
          <AddressLine1>ONE PHYSICS ELLIPSE</AddressLine1>
          <City>COLLEGE PARK</City>
          <State>MD</State>
          <ZIPCode>20740</ZIPCode>
        </AddressUS>
        <EIN>270602778</EIN>
        <PrimaryActivity>INTERNATIONAL</PrimaryActivity>
        <LegalDomicileState>DE</LegalDomicileState>
        <DirectControllingEntityName>
          <BusinessNameLine1>AIP</BusinessNameLine1>
        </DirectControllingEntityName>
        <TypeOfEntity>C CORP</TypeOfEntity>
        <ShareOfTotalIncome>23255</ShareOfTotalIncome>
        <ShareOfEOYAssets>450801</ShareOfEOYAssets>
        <PercentageOwnership>1.00000</PercentageOwnership>
      </Form990ScheduleRPartIV>
      <ReceiptOfIntAnnRentsRoyalties>false</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>false</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>false</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>false</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>false</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>true</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>true</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>true</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>false</SharingOfFacilities>
      <SharingOfPaidEmployees>true</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>true</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>false</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>false</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>false</OtherTransferFromOtherOrg>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>AMERICAN CENTER FOR PHYSICS</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>J</TransactionType>
        <AmountInvolved>3357596</AmountInvolved>
        <MethodOfAmtDetermination>AGREEMENT</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>AMERICAN CENTER FOR PHYSICS</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>N</TransactionType>
        <AmountInvolved>1170110</AmountInvolved>
        <MethodOfAmtDetermination>AGREEMENT</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>AIP GLOBAL INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>K</TransactionType>
        <AmountInvolved>23234</AmountInvolved>
        <MethodOfAmtDetermination>AGREEMENT</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>AIP GLOBAL INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>L</TransactionType>
        <AmountInvolved>19000</AmountInvolved>
        <MethodOfAmtDetermination>AGREEMENT</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
      <TransactionsRelatedOrgsTable>
        <NameOfOtherOrganization>
          <BusinessNameLine1>AIP GLOBAL INC</BusinessNameLine1>
        </NameOfOtherOrganization>
        <TransactionType>O</TransactionType>
        <AmountInvolved>154894</AmountInvolved>
        <MethodOfAmtDetermination>AGREEMENT</MethodOfAmtDetermination>
      </TransactionsRelatedOrgsTable>
    </IRS990ScheduleR>
  </ReturnData>
</Return>