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      <FootnoteTextInd>X</FootnoteTextInd>
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      <NetUnrealizedGainsInvstAmt>1573041</NetUnrealizedGainsInvstAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>Earnings on the endowed funds are to provide an annual scholarship for women physicists and to provide awards to distinguished individuals in the field of physics.</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, 2014 and 2013. 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 Form 990 tax returns as required and all applicable returns in those jurisdictions where it is required. 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 2011. However, APS is still open to examinations by tax authorities from fiscal year 2011 forward. For the years ended December 31, 2014 and 2013, there were no interest or penalties recorded in the statements of activities.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, Line 2d</FormAndLineReferenceDesc>
        <ExplanationTxt>Change in post-retirement medical benefits other than net periodic post-retirement medical benefit cost of $(1,614,947). Net assets released from restrictions of $519,117.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XII, Line 2d</FormAndLineReferenceDesc>
        <ExplanationTxt>Net assets released from restrictions on $519,117.</ExplanationTxt>
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        <ExplanationTxt>Recipients 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 Board or Council before being given to distinguished physicists.</ExplanationTxt>
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        <USAddress>
          <AddressLine1Txt>DEPT OF PHYS PO BOX 413</AddressLine1Txt>
          <CityNm>Milwaukee</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
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      <RecipientTable>
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          <BusinessNameLine1Txt>Virginia Polytechnic Institute</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>1600 Pratt Drive</AddressLine1Txt>
          <CityNm>Blacksburg</CityNm>
          <StateAbbreviationCd>VA</StateAbbreviationCd>
          <ZIPCd>24060</ZIPCd>
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        <RecipientEIN>546001805</RecipientEIN>
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        <CashGrantAmt>66001</CashGrantAmt>
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        <PurposeOfGrantTxt>Physics Education Grant</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Ohio State University</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>191 W WOODRUFF AVE</AddressLine1Txt>
          <CityNm>Columbus</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>43210</ZIPCd>
        </USAddress>
        <RecipientEIN>316025986</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>45056</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Physics Minority Bridge Program</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>University of South Florida</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>CLEAN ENERGY RESEARCH CENTER</AddressLine1Txt>
          <AddressLine2Txt>4202 E FOWLER AVE ENB 118</AddressLine2Txt>
          <CityNm>Tampa</CityNm>
          <StateAbbreviationCd>FL</StateAbbreviationCd>
          <ZIPCd>33620</ZIPCd>
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        <RecipientEIN>593102112</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>37571</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Physics Minority Bridge Program</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>The Kitchen Theatre Company</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 429</AddressLine1Txt>
          <CityNm>Ithaca</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>14851</ZIPCd>
        </USAddress>
        <RecipientEIN>161443072</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
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        <PurposeOfGrantTxt>Public Outreach Grant</PurposeOfGrantTxt>
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      <RecipientTable>
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        <USAddress>
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          <CityNm>Milwaukee</CityNm>
          <StateAbbreviationCd>WI</StateAbbreviationCd>
          <ZIPCd>532010413</ZIPCd>
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        <RecipientEIN>396006492</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>6500</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Public Outreach Grant</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Axolotl Science Outreach</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2475 Virginia Avenue NW 716</AddressLine1Txt>
          <CityNm>Washington</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20037</ZIPCd>
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          <BusinessNameLine1Txt>Montana State University</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>Office of Sponsored Programs</AddressLine1Txt>
          <AddressLine2Txt>309 Montana Hall Box 172470</AddressLine2Txt>
          <CityNm>Bozeman</CityNm>
          <StateAbbreviationCd>MT</StateAbbreviationCd>
          <ZIPCd>597172470</ZIPCd>
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        <PurposeOfGrantTxt>Public Outreach Grant</PurposeOfGrantTxt>
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          <AddressLine1Txt>NSCL/Cyclotron Laboratory</AddressLine1Txt>
          <CityNm>East Lansing</CityNm>
          <StateAbbreviationCd>MI</StateAbbreviationCd>
          <ZIPCd>488241321</ZIPCd>
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        <RecipientEIN>386005984</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>9847</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Public Outreach Grant</PurposeOfGrantTxt>
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      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AAAS</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
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          <CityNm>Washington</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20005</ZIPCd>
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        <RecipientEIN>530196568</RecipientEIN>
        <IRCSectionDesc>501(c)(3)</IRCSectionDesc>
        <CashGrantAmt>19000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>Physics Media Fellow Grant</PurposeOfGrantTxt>
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      <TotalOtherOrgCnt>0</TotalOtherOrgCnt>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Programs-Honorariums</GrantTypeTxt>
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        <CashGrantAmt>8950</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
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      <GrantsOtherAsstToIndivInUSGrp>
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      <GrantsOtherAsstToIndivInUSGrp>
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      <GrantsOtherAsstToIndivInUSGrp>
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        <CashGrantAmt>166263</CashGrantAmt>
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      <GrantsOtherAsstToIndivInUSGrp>
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      <GrantsOtherAsstToIndivInUSGrp>
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        <CashGrantAmt>430752</CashGrantAmt>
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      <GrantsOtherAsstToIndivInUSGrp>
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        <CashGrantAmt>204418</CashGrantAmt>
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      <GrantsOtherAsstToIndivInUSGrp>
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        <CashGrantAmt>19612</CashGrantAmt>
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      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>Other-Participant Support</GrantTypeTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule I, Part I, Line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Recipients 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 Executive Board or Council before being given to distinguished physicists.</ExplanationTxt>
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    </IRS990ScheduleI>
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        <PersonNm>Nan Phinney</PersonNm>
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        <PersonNm>Gay Stewart</PersonNm>
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        <PersonNm>Young-Kee Kim</PersonNm>
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        <PersonNm>Wick Haxton</PersonNm>
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        <PersonNm>Daniel Kleppner</PersonNm>
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        <PersonNm>Kate P Kirby</PersonNm>
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        <PersonNm>Gene D Sprouse</PersonNm>
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        <PersonNm>Joseph W Serene</PersonNm>
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        <PersonNm>Ken Cole</PersonNm>
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        <PersonNm>Mark Doyle</PersonNm>
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        <PersonNm>Theodore Hodapp</PersonNm>
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        <PersonNm>Amy Flatten</PersonNm>
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        <PersonNm>Michael D Stephens</PersonNm>
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        <PersonNm>Tracy Alinger</PersonNm>
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        <PersonNm>Barbara Hicks</PersonNm>
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        <FormAndLineReferenceDesc>Schedule J, Part I, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>Gene Sprouse contributed $17000 to a Section 457 Plan. Ted Hodapp contributed $17500 to a Section 457 Plan. Amy Flatten contributed $6500 to a Section 457 Plan. Michael Stephens contributed $6500 to a Section 457 Plan. Peter Adams contributed $17000 to a Section 457 Plan. William Reinhardt contributed $17,500 to a Section 457 Plan.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>On 8/16/2014, the Council approved the Amended and Restated Articles of Incorporation. On 11/15/2014, the Council approved the Revised Constitution and Bylaws which appointed the Board of Directors as the governing body of the American Physical Society. These documents can be found at http://www.aps.org/about/governance/documents/index.cfm.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>APS has 51,523 members.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>Under the new governing documents, society members elect the members of the Council of Representatives. The members of the Council of Representatives elect the members of the Board of Directors, which is now the governing body.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>The members of the governing body received an email with a draft copy of the Form 990.</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 each year. That report is reviewed by the Executive Officer for potential conflicts.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>A senior personnel committee approves the annual salaries of the officers and key employees of the Society. Salary surveys are reviewed by this committee as part of the process.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The APS governing documents are available online at http://www.aps.org/about/governance/documents/index.cfm. The financial statements are included in the APS Annual Report also available at http://www.aps.org/about/governance/annual-reports/index.cfm.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Consultant Fees $2,693,917; Publication Composition and Printing $5,282,068.</ExplanationTxt>
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