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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>42171</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KEN COLE</PersonNm>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>29635</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>PIERRE MEYTRE</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
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        <OtherCompensationAmt>12186</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL THOENNESSEN</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <AverageHoursPerWeekRt>40.0</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>5419</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JANE HOPKINS GOULD</PersonNm>
        <TitleTxt>CHIEF FINANCIAL OFFICER</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>FRANCIS SLAKEY</PersonNm>
        <TitleTxt>CHIEF GOVERNMENT OFFICER</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MATHEW SALTER</PersonNm>
        <TitleTxt>PUBLISHER</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>MARK DOYLE</PersonNm>
        <TitleTxt>CHIEF INFORMATION OFFICER</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES TAYLOR</PersonNm>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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        <OtherCompensationAmt>32114</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>THEODORE HODAPP</PersonNm>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>AMY FLATTEN</PersonNm>
        <TitleTxt>DIR OF INTERNATIONAL AFFAIRS</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DANIEL KULP</PersonNm>
        <TitleTxt>ASSOCIATE EDITORIAL DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.0</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>40190</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAUL DLUG</PersonNm>
        <TitleTxt>ASSISTANT DIRECTOR OF JIS</TitleTxt>
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        <OtherCompensationAmt>29094</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Christine Giaccone</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>19471</OtherCompensationAmt>
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      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>411940</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>57</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>IENEGIZER APTARA LIMITED</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>13963 Collections Cntr Drive BOX 1</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60693</ZIPCd>
          </USAddress>
        </ContractorAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Lumina Datamatics Inc</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>DEPT CH 16508</AddressLine1Txt>
            <CityNm>PALATINE</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>600556508</ZIPCd>
          </USAddress>
        </ContractorAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>American Institute of Physics</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1 Physics Ellipse</AddressLine1Txt>
            <CityNm>COLLEGE PARK</CityNm>
            <StateAbbreviationCd>MD</StateAbbreviationCd>
            <ZIPCd>20740</ZIPCd>
          </USAddress>
        </ContractorAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>EDWARDS BROTHERS</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>7759 Solution Center</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>606777007</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>PUBLISHING SERVICES</ServicesDesc>
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      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Freeman Audio Visual</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>4545 West Davis Street</AddressLine1Txt>
            <CityNm>DALLAS</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>75211</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Audio Visual Service</ServicesDesc>
        <CompensationAmt>977015</CompensationAmt>
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      <CntrctRcvdGreaterThan100KCnt>16</CntrctRcvdGreaterThan100KCnt>
      <MembershipDuesAmt>4069466</MembershipDuesAmt>
      <GovernmentGrantsAmt>1523278</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>2368620</AllOtherContributionsAmt>
      <NoncashContributionsAmt>28469</NoncashContributionsAmt>
      <TotalContributionsAmt>7961364</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>RESEARCH PUBLICATIONS</Desc>
        <BusinessCd>511120</BusinessCd>
        <TotalRevenueColumnAmt>41391898</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>41243327</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>148571</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>SCIENTIFIC MEETINGS</Desc>
        <BusinessCd>541990</BusinessCd>
        <TotalRevenueColumnAmt>7220886</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>6539805</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>681081</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>PUBLIC AFFAIRS PROGRAMS</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>68295</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>68295</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP OPERATIONS</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>199057</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>73803</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>100050</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>25204</ExclusionAmt>
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      <TotalProgramServiceRevenueAmt>48880136</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
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        <ExclusionAmt>4170160</ExclusionAmt>
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      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </RoyaltiesRevenueGrp>
      <RentalIncomeOrLossGrp>
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        <PersonalAmt>0</PersonalAmt>
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      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>5341127</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>2915368</TotalRevenueColumnAmt>
        <ExclusionAmt>2915368</ExclusionAmt>
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      <FundraisingDirectExpensesAmt>0</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncmFromFundraisingEvtGrp>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <GamingDirectExpensesAmt>0</GamingDirectExpensesAmt>
      <NetIncomeFromGamingGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeFromGamingGrp>
      <GrossSalesOfInventoryAmt>0</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncomeOrLossGrp>
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        <TotalRevenueColumnAmt>63927028</TotalRevenueColumnAmt>
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        <UnrelatedBusinessRevenueAmt>100050</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>7940384</ExclusionAmt>
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        <TotalAmt>840294</TotalAmt>
        <ProgramServicesAmt>840294</ProgramServicesAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>1402967</TotalAmt>
        <ProgramServicesAmt>1402967</ProgramServicesAmt>
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        <TotalAmt>205828</TotalAmt>
        <ProgramServicesAmt>205828</ProgramServicesAmt>
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      <BenefitsToMembersGrp>
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        <ProgramServicesAmt>0</ProgramServicesAmt>
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        <TotalAmt>2073934</TotalAmt>
        <ProgramServicesAmt>1488578</ProgramServicesAmt>
        <ManagementAndGeneralAmt>521283</ManagementAndGeneralAmt>
        <FundraisingAmt>64073</FundraisingAmt>
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        <ProgramServicesAmt>18543886</ProgramServicesAmt>
        <ManagementAndGeneralAmt>574109</ManagementAndGeneralAmt>
        <FundraisingAmt>362289</FundraisingAmt>
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        <ProgramServicesAmt>1916339</ProgramServicesAmt>
        <ManagementAndGeneralAmt>104787</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>4475189</ProgramServicesAmt>
        <ManagementAndGeneralAmt>118896</ManagementAndGeneralAmt>
        <FundraisingAmt>88937</FundraisingAmt>
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        <ProgramServicesAmt>1431721</ProgramServicesAmt>
        <ManagementAndGeneralAmt>98314</ManagementAndGeneralAmt>
        <FundraisingAmt>29706</FundraisingAmt>
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        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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        <ProgramServicesAmt>12772</ProgramServicesAmt>
        <ManagementAndGeneralAmt>66304</ManagementAndGeneralAmt>
        <FundraisingAmt>262</FundraisingAmt>
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        <ManagementAndGeneralAmt>121045</ManagementAndGeneralAmt>
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      <FeesForServicesLobbyingGrp>
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        <FundraisingAmt>0</FundraisingAmt>
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      <FeesForServicesProfFundraising>
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        <FundraisingAmt>0</FundraisingAmt>
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      <FeesForSrvcInvstMgmntFeesGrp>
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        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>7935178</ProgramServicesAmt>
        <ManagementAndGeneralAmt>195606</ManagementAndGeneralAmt>
        <FundraisingAmt>52602</FundraisingAmt>
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      <AdvertisingGrp>
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        <ProgramServicesAmt>32929</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1326</ManagementAndGeneralAmt>
        <FundraisingAmt>255</FundraisingAmt>
      </AdvertisingGrp>
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        <ProgramServicesAmt>2496976</ProgramServicesAmt>
        <ManagementAndGeneralAmt>146895</ManagementAndGeneralAmt>
        <FundraisingAmt>53200</FundraisingAmt>
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      <InformationTechnologyGrp>
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        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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      <OccupancyGrp>
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        <ProgramServicesAmt>1496814</ProgramServicesAmt>
        <ManagementAndGeneralAmt>135937</ManagementAndGeneralAmt>
        <FundraisingAmt>26140</FundraisingAmt>
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      <TravelGrp>
        <TotalAmt>2278290</TotalAmt>
        <ProgramServicesAmt>1930236</ProgramServicesAmt>
        <ManagementAndGeneralAmt>329725</ManagementAndGeneralAmt>
        <FundraisingAmt>18329</FundraisingAmt>
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      <PymtTravelEntrtnmntPubOfclGrp>
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        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </PymtTravelEntrtnmntPubOfclGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>4895529</TotalAmt>
        <ProgramServicesAmt>4802162</ProgramServicesAmt>
        <ManagementAndGeneralAmt>82871</ManagementAndGeneralAmt>
        <FundraisingAmt>10496</FundraisingAmt>
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        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
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      <PaymentsToAffiliatesGrp>
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        <ProgramServicesAmt>0</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>749578</TotalAmt>
        <ProgramServicesAmt>666636</ProgramServicesAmt>
        <ManagementAndGeneralAmt>69565</ManagementAndGeneralAmt>
        <FundraisingAmt>13377</FundraisingAmt>
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        <TotalAmt>151254</TotalAmt>
        <ProgramServicesAmt>21247</ProgramServicesAmt>
        <ManagementAndGeneralAmt>130004</ManagementAndGeneralAmt>
        <FundraisingAmt>3</FundraisingAmt>
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      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
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    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
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      <OtherSecuritiesGrp>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D,Part V, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>EARNINGS ON ENDOWMENT FUNDS ARE USED TO PROVIDE AWARDS TO DISTINGUISHED INDIVIDUALS AND TRAVEL ASSISTANCE IN THE FIELD OF PHYSICS, AS WELL AS TO PROVIDE A SCHOLOSHIP FOR WOMEN PHYSICISTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part X, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>APS is exempt from federal income tax under Section 501(c)(3) of the Internal Revenue Code and has been classified as an organization that is not a private foundation. APS had an immaterial amount of unrelated business income for the years ended December 31, 2017 and 2016. Under ASC 740-10, Accounting for Uncertainty in Income Taxes, an organization must recognize the tax benefit associated with tax positions taken for tax return purposes when it is more-likely than not that the position will be sustained. APS does not believe there are any material uncertain tax positions and; accordingly, will not recognize any liability for unrecognized tax benefits. APS has filed for and received income tax exemptions in the jurisdictions where it is required to do so. Additionally, APS has filed Internal Revenue Service Form 990 tax returns as required and all applicable returns in those jurisdictions where it is required to do so. APS believes that it is no longer subject to U.S. Federal, State and local, or non-U.S. income tax examinations by tax authorities for years before 2014. However, APS is still open to examinations by tax authorities from fiscal year 2014 forward. For the years ended December 31, 2017 and 2016, there were no interest or penalties recorded in the statements of activities.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, Line 2d:</FormAndLineReferenceDesc>
        <ExplanationTxt>Change in post-retirement medical benefits other than net periodic post-retirement medical cost of $8,321,569. Net Assets released from restrictions of $1,039,305.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XII, Line 2d:</FormAndLineReferenceDesc>
        <ExplanationTxt>Net assets released from restrictions of $1,039,305.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleF documentId="IRS990ScheduleF">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>93452</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>11815</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>13102</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Sub-Saharan Africa</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>4000</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>South America</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>48113</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>North America</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>17357</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <AccountActivitiesOutsideUSGrp>
        <RegionTxt>Central America and the Caribbean</RegionTxt>
        <OfficesCnt>0</OfficesCnt>
        <EmployeeCnt>0</EmployeeCnt>
        <TypeOfActivitiesConductedTxt>Grantmaking</TypeOfActivitiesConductedTxt>
        <SpecificServicesProvidedTxt>Grants</SpecificServicesProvidedTxt>
        <RegionTotalExpendituresAmt>18594</RegionTotalExpendituresAmt>
      </AccountActivitiesOutsideUSGrp>
      <SubtotalOfficesCnt>0</SubtotalOfficesCnt>
      <SubtotalEmployeesCnt>0</SubtotalEmployeesCnt>
      <TotalOfficeCnt>0</TotalOfficeCnt>
      <TotalEmployeeCnt>0</TotalEmployeeCnt>
      <SubtotalSpentAmt>206433</SubtotalSpentAmt>
      <TotalSpentAmt>206433</TotalSpentAmt>
      <GrantsToOrgOutsideUSGrp>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <PurposeOfGrantTxt>Grantmaking</PurposeOfGrantTxt>
        <CashGrantAmt>10000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>Check/Wire</MannerOfCashDisbursementTxt>
      </GrantsToOrgOutsideUSGrp>
      <Total501c3OrgCnt>1</Total501c3OrgCnt>
      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Travel Assistance</TypeOfAssistanceTxt>
        <RegionTxt>Central America and the Caribbean</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>18594</CashGrantAmt>
        <MannerOfCashDisbursementTxt>Check/Wire</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Prizes and Awards</TypeOfAssistanceTxt>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>11702</CashGrantAmt>
        <MannerOfCashDisbursementTxt>Check/Wire</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>Prizes and Awards</TypeOfAssistanceTxt>
        <RegionTxt>North America</RegionTxt>
        <RecipientCnt>3</RecipientCnt>
        <CashGrantAmt>16357</CashGrantAmt>
        <MannerOfCashDisbursementTxt>Check/Wire</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL ASSISTANCE</TypeOfAssistanceTxt>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>1300</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL ASSISTANCE</TypeOfAssistanceTxt>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2617</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL ASSISTANCE</TypeOfAssistanceTxt>
        <RegionTxt>East Asia and the Pacific</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>500</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL ASSISTANCE</TypeOfAssistanceTxt>
        <RegionTxt>Sub-Saharan Africa</RegionTxt>
        <RecipientCnt>20</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL ASSISTANCE</TypeOfAssistanceTxt>
        <RegionTxt>North America</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>1000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>PRIZES AND AWARDS</TypeOfAssistanceTxt>
        <RegionTxt>Middle East and North Africa</RegionTxt>
        <RecipientCnt>2</RecipientCnt>
        <CashGrantAmt>4198</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>PRIZES AND AWARDS</TypeOfAssistanceTxt>
        <RegionTxt>Europe (Including Iceland and Greenland)</RegionTxt>
        <RecipientCnt>19</RecipientCnt>
        <CashGrantAmt>81752</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>PRIZES AND AWARDS</TypeOfAssistanceTxt>
        <RegionTxt>Sub-Saharan Africa</RegionTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>2000</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <ForeignIndividualsGrantsGrp>
        <TypeOfAssistanceTxt>TRAVEL ASSISTANCE</TypeOfAssistanceTxt>
        <RegionTxt>South America</RegionTxt>
        <RecipientCnt>20</RecipientCnt>
        <CashGrantAmt>48113</CashGrantAmt>
        <MannerOfCashDisbursementTxt>CHECK/WIRE</MannerOfCashDisbursementTxt>
      </ForeignIndividualsGrantsGrp>
      <TransferToForeignCorpInd>false</TransferToForeignCorpInd>
      <InterestInForeignTrustInd>false</InterestInForeignTrustInd>
      <ForeignCorpOwnershipInd>false</ForeignCorpOwnershipInd>
      <PassiveForeignInvestmestCoInd>false</PassiveForeignInvestmestCoInd>
      <ForeignPartnershipInd>false</ForeignPartnershipInd>
      <BoycottCountriesInd>false</BoycottCountriesInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule F, Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>Recipients are selected based upon criteria determined by oversight committees. Receipients provided lump sum payments at the beginning of the grant period are expected to submit final reports detailing expenditures. Funds given on a "reimbursement" basis require the recipient to provide APS with an expense report that includes receipts for his/her expenditures. In addition, the formal Prize and Awards are based upon prior accomplishments and are approved by the Council of Representatives before being given to distinguished physicists. The grants other than prize and awards are based upon review by senior staff and committees.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleF>
    <IRS990ScheduleI documentId="IRS990ScheduleI">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>California State University-Fresno</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2345 E San Ramon Fresno</AddressLine1Txt>
          <CityNm>Fresno</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>93740</ZIPCd>
        </USAddress>
        <RecipientEIN>946003272</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>39106</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Bridge Pgm</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Florida International University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>11200 SW 8th Street</AddressLine1Txt>
          <CityNm>Miami</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33199</ZIPCd>
        </USAddress>
        <RecipientEIN>650177616</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>68157</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Bridge Pgm</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Florida State University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>874 Traditions Way</AddressLine1Txt>
          <CityNm>tallahassee</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>323064166</ZIPCd>
        </USAddress>
        <RecipientEIN>591961248</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>67651</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Bridge Pgm</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Indiana University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 78000</AddressLine1Txt>
          <CityNm>Detroit</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>482780867</ZIPCd>
        </USAddress>
        <RecipientEIN>356001673</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>85692</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Bridge Pgm</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>New Mexico Consortium</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>4200 W JIMENEZ RD STE 301</AddressLine1Txt>
          <CityNm>Los Alamos</CityNm>
          <StateAbbreviationCd>NM</StateAbbreviationCd>
          <ZIPCd>875445500</ZIPCd>
        </USAddress>
        <RecipientEIN>260370262</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>9070</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Outreach</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>The Ohio State University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1960 Kenny Rd</AddressLine1Txt>
          <CityNm>Columbus</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>432107505</ZIPCd>
        </USAddress>
        <RecipientEIN>316025986</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>32161</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Outreach</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Regents of the University of Minnesota</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 1450</AddressLine1Txt>
          <CityNm>Minneapolis</CityNm>
          <StateAbbreviationCd>MN</StateAbbreviationCd>
          <ZIPCd>554855957</ZIPCd>
        </USAddress>
        <RecipientEIN>466007513</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>7385</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Outreach</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Rochester Institute of Technology</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>85 LOMB MEMORIAL DRIVE</AddressLine1Txt>
          <CityNm>ROCHESTER</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>14623</ZIPCd>
        </USAddress>
        <RecipientEIN>160743140</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>8248</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Rowan University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>3RD Floor James Hall</AddressLine1Txt>
          <CityNm>Glassboro</CityNm>
          <StateAbbreviationCd>NH</StateAbbreviationCd>
          <ZIPCd>08028</ZIPCd>
        </USAddress>
        <RecipientEIN>222764819</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>114052</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Salisbury University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1101 CAMDEN AVENUE</AddressLine1Txt>
          <CityNm>Salisbury</CityNm>
          <StateAbbreviationCd>MD</StateAbbreviationCd>
          <ZIPCd>21801</ZIPCd>
        </USAddress>
        <RecipientEIN>526002033</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>8946</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Texas State University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>601 University Dr</AddressLine1Txt>
          <CityNm>San Marcos</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>78666</ZIPCd>
        </USAddress>
        <RecipientEIN>222764819</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>61910</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of Central Florida</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>12424 Research Pkway</AddressLine1Txt>
          <CityNm>Orlando</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>328263249</ZIPCd>
        </USAddress>
        <RecipientEIN>592924021</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>68037</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>UNV of Massachusetts-Dartmouth</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>285 OLD WESTPORT Rd</AddressLine1Txt>
          <CityNm>North Dartmouth</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02747</ZIPCd>
        </USAddress>
        <RecipientEIN>043167352</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>21186</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of Northern Colorado</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>501 20th STREET</AddressLine1Txt>
          <CityNm>Greeley</CityNm>
          <StateAbbreviationCd>CO</StateAbbreviationCd>
          <ZIPCd>80639</ZIPCd>
        </USAddress>
        <RecipientEIN>846000546</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>63302</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of South Florida</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>4202 E Fowler Ave ENB 118</AddressLine1Txt>
          <CityNm>Tampa</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33620</ZIPCd>
        </USAddress>
        <RecipientEIN>951642394</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>20262</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>West Virginia University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>BOX 6315</AddressLine1Txt>
          <CityNm>Morgantown</CityNm>
          <StateAbbreviationCd>WV</StateAbbreviationCd>
          <ZIPCd>256066315</ZIPCd>
        </USAddress>
        <RecipientEIN>550665758</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>46107</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Education</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AAAS</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1200 New York Ave NW</AddressLine1Txt>
          <CityNm>Washington</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
        </USAddress>
        <RecipientEIN>530196568</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <PurposeOfGrantTxt>Physics Media Fellow</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>17</Total501c3OrgCnt>
      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Honorariums</GrantTypeTxt>
        <RecipientCnt>8</RecipientCnt>
        <CashGrantAmt>12700</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Travel Assistance</GrantTypeTxt>
        <RecipientCnt>216</RecipientCnt>
        <CashGrantAmt>126627</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Travel Grants</GrantTypeTxt>
        <RecipientCnt>490</RecipientCnt>
        <CashGrantAmt>245047</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Participant Support</GrantTypeTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>24317</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Outreach Grants</GrantTypeTxt>
        <RecipientCnt>4</RecipientCnt>
        <CashGrantAmt>1313</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Meeting Fee Waivers</GrantTypeTxt>
        <RecipientCnt>156</RecipientCnt>
        <CashGrantAmt>40858</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Child Care Grants</GrantTypeTxt>
        <RecipientCnt>30</RecipientCnt>
        <CashGrantAmt>11769</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Other Expenses</GrantTypeTxt>
        <RecipientCnt>63</RecipientCnt>
        <CashGrantAmt>91671</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Prizes and Awards-Stipends Certificates and Travel</GrantTypeTxt>
        <RecipientCnt>145</RecipientCnt>
        <CashGrantAmt>533045</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Travel-Participant Support</GrantTypeTxt>
        <RecipientCnt>150</RecipientCnt>
        <CashGrantAmt>124025</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Subsistance-Participant Support</GrantTypeTxt>
        <RecipientCnt>150</RecipientCnt>
        <CashGrantAmt>174868</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Other-Participant Support</GrantTypeTxt>
        <RecipientCnt>32</RecipientCnt>
        <CashGrantAmt>16726</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule I, Part I, Line 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>Receipients are selected based upon criteria determined by oversight committees. Recipients provided lump sum payments at the beginning of the grant period are expected to submit final reports detailing expenditures. Funds given on a "reimbursement" basis require the recipient to provide APS with an expense report that includes receipts for his/her expenditures. In addition, the formal Prizes and Awards are based upon prior accomplishments and are approved by the Council of Representatives before beING given to distinguished physicISTS. Subawards of federal grants are preapproved by the applicable federal agency and a memorandum of understanding is executed with the recipient citing the federal requirements.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KATE P KIRBY</PersonNm>
        <TitleTxt>CHIEF EXECUTIVE OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>434050</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>25923</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16248</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>476221</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KEN COLE</PersonNm>
        <TitleTxt>CORPORATE SECRETARY</TitleTxt>
        <BaseCompensationFilingOrgAmt>122279</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>13387</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16248</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>151914</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PIERRE MEYTRE</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>23619</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>20269</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>12186</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>260213</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL THOENNESSEN</PersonNm>
        <TitleTxt>EDITOR-IN-CHIEF</TitleTxt>
        <BaseCompensationFilingOrgAmt>93767</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>83850</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>1978</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>5419</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>185014</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JANE HOPKINS GOULD</PersonNm>
        <TitleTxt>CHIEF FINANCIAL OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>207188</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>16248</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>223436</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>FRANCIS SLAKEY</PersonNm>
        <TitleTxt>CHIEF GOVERNMENT OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>192321</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>6797</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>20614</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>20699</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>240431</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MATHEW SALTER</PersonNm>
        <TitleTxt>PUBLISHER</TitleTxt>
        <BaseCompensationFilingOrgAmt>216280</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>21337</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>9198</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>246815</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MARK DOYLE</PersonNm>
        <TitleTxt>CHIEF INFORMATION OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>253437</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>26558</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19876</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>299871</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JAMES TAYLOR</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>215938</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22710</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>9404</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>248052</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>THEODORE HODAPP</PersonNm>
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        <DeferredCompensationFlngOrgAmt>21416</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>237490</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>AMY FLATTEN</PersonNm>
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        <DeferredCompensationFlngOrgAmt>20064</DeferredCompensationFlngOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>9392</NontaxableBenefitsFilingOrgAmt>
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        <TotalCompensationFilingOrgAmt>218914</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DANIEL KULP</PersonNm>
        <TitleTxt>ASSOCIATE EDITORIAL DIRECTOR</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
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        <TotalCompensationFilingOrgAmt>226057</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PAUL DLUG</PersonNm>
        <TitleTxt>ASSISTANT DIRECTOR OF JIS</TitleTxt>
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        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>Christine Giaccone</PersonNm>
        <TitleTxt>Director of Journal Operations</TitleTxt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
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        <DeferredCompensationFlngOrgAmt>19471</DeferredCompensationFlngOrgAmt>
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        <TotalCompensationFilingOrgAmt>204920</TotalCompensationFilingOrgAmt>
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      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="IRS990ScheduleM">
      <WorksOfArtGrp />
      <ArtHistoricalTreasuresGrp />
      <ArtFractionalInterestGrp />
      <BooksAndPublicationsGrp />
      <ClothingAndHouseholdGoodsGrp />
      <CarsAndOtherVehiclesGrp />
      <BoatsAndPlanesGrp />
      <IntellectualPropertyGrp />
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>4</ContributionCnt>
        <NoncashContributionsRptF990Amt>28469</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <SecuritiesCloselyHeldStockGrp />
      <SecurPrtnrshpTrustIntrstsGrp />
      <SecuritiesMiscellaneousGrp />
      <QualifiedContribHistStructGrp />
      <QualifiedContribOtherGrp />
      <RealEstateResidentialGrp />
      <RealEstateCommercialGrp />
      <RealEstateOtherGrp />
      <CollectiblesGrp />
      <FoodInventoryGrp />
      <DrugsAndMedicalSuppliesGrp />
      <TaxidermyGrp />
      <HistoricalArtifactsGrp />
      <ScientificSpecimensGrp />
      <ArchaeologicalArtifactsGrp />
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>false</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6:</FormAndLineReferenceDesc>
        <ExplanationTxt>APS has 54,029 members.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 7a:</FormAndLineReferenceDesc>
        <ExplanationTxt>Society members elect the Presidential Line (President, President-Elect, Vice President, and Past President) Who sit upon the Board of Directors.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B:</FormAndLineReferenceDesc>
        <ExplanationTxt>The members of the governing body receive a copy of the Form 990 BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C:</FormAndLineReferenceDesc>
        <ExplanationTxt>Employees and Governing Body Members are asked to complete a Conflict of Interest Report annually that is reviewed by the Chief Executive Officer AND CHIEF FINANCIAL Officer for potential conflicts.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15:</FormAndLineReferenceDesc>
        <ExplanationTxt>The compensation committee approves the annual compensation of the Chief Executive Officer and OTHER officers. Compensation for Key Employees is determined by the Chief Executive Officer. Compensation surveys are used as part of the process.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19:</FormAndLineReferenceDesc>
        <ExplanationTxt>The APS governing documents, financial statements and conflict of interest policy are available online at the organization's website. The financial statements are included in the APS Annual Report. The documents are also available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>Change in post-retirement medical benefits other than net periodic post-retirement medical benefit cost. $8,321,569</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:CONSULTANT FEES TOTAL FEES:2879249</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART IX LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION:WRITING TOTAL FEES:5304137</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>