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        <Desc>special collections - see schedule o.SPECIAL COLLECTIONS - THE SPECIAL COLLECTIONS DEPARTMENT IS COMPOSED OFTHE CURATORS WHO OVERSEE THE ACQUISITION, MAINTENANCE, AND EXHIBITIONOF RARE BOOKS, ARCHIVAL DOCUMENTS, MANUSCRIPTS, MAPS, AND WORKS OF ART.DEPARTMENT STAFF MEMBERS INCLUDE THE CURATOR OF RARE BOOKS ANDMANUSCRIPTS, THE CURATOR OF PAINTINGS AND SCULPTURE, THE ASSOCIATECURATOR OF PAINTINGS AND SCULPTURE, THE ARCHIVIST,AND THE CURATOR OF PRINTS AND PHOTOGRAPHS. THE CURATORS RESEARCHOBJECTS IN THE COLLECTIONS AND DISSEMINATE INFORMATION ABOUT THEM TOTHE SCHOLARLY COMMUNITY AT LARGE AND TO THE PUBLIC THROUGH LECTURES,PUBLICATIONS, AND (IN COOPERATION WITH LIBRARIES, ARCHIVES, AND MUSEUMSAROUND THE COUNTRY) AN ACTIVE LOAN PROGRAM. EACH YEAR, ON SITE, THECURATORS ASSIST HUNDREDS OF ATHENAEUM MEMBERS AND VISITING SCHOLARS INRESEARCHING THE ATHENAEUM'S COLLECTIONS. THE CURATORIAL STAFF MOUNTSTWO OR THREE EXHIBITIONS PER YEAR COVERING A RANGE OF HISTORICAL ANDCONTEMPORARY SUBJECTS. THESE EXHIBITIONS ARE ACCOMPANIED BY GALLERYTALKS, LECTURES, AND SYMPOSIA, ALL OF WHICH ARE OPEN TO THE PUBLIC.</Desc>
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        <Desc>Lectures &amp; Concerts - see schedule oLECTURES &amp; CONCERTS - THE LECTURES AND CONCERTS PROGRAM INCLUDESAPPROXIMATELY 100 EVENTS EACH YEAR, SUCH AS AUTHOR TALKS, LECTURES,CONCERTS, CHILDREN'S EVENTS, EXHIBITION RECEPTIONS AND MOVIES. EVENTSTAKE PLACE BOTH IN THE EVENING AND DURING THE DAY AND INCLUDE EVENTSTHAT ARE OPEN TO THE GENERAL PUBLIC AS WELL AS EVENTS FOR ATHENAEUMMEMBERS.</Desc>
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        <AverageHoursPerWeekRltdOrgRt>2.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Clarissa C Hunnewell</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>James F Hunnewell Jr</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>2.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Terrance P Mcguire</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Carolyn M Osteen</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>2.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>2.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Creelea Henderson Pangaro</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>austin v shapard</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Timothy W Diggins</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Arthur B Page</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Anne C Bromer</PersonNm>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>Maisie Houghton</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Elizabeth H Owens</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Elizabeth E Barker</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Christopher Boudrot</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>David Dearinger</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>Robert L West</PersonNm>
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      <OtherChangesInNetAssetsAmt>-1077227</OtherChangesInNetAssetsAmt>
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      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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        <ExplanationTxt>The Athenaeum's collections comprise over half a million volumes, extensive holdings of paintings, sculptures, prints, and photographs. Particular strengths are in Boston history, New England state and local history, biography, English and American literature, and the fine and decorative arts. The Athenaeum supports a dynamic exhibition program and sponsors a lively variety of events such as lectures and concerts. It also serves as a stimulating center for discussions among scholars, bibliophiles, and a variety of community-interest groups.</ExplanationTxt>
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        <ExplanationTxt>The Athenaeum's endowment consists of approximately 500 endowment funds established for a variety of purposes. Its endowment includes both donor-restricted endowment funds and funds designated by the Board to function as endowments. Net assets associated with endowment funds are classified and reported based on the existence or absence of donor-imposed or legal restrictions. Endowment funds include invested gifts. The Athenaeum classifies as permanently restricted net assets (a) the original value of gifts donated to the permanent endowment, (b) the original value of subsequent gifts to the permanent endowment, and (c) accumulations to the permanent endowment made in accordance with the direction of the applicable donor gift instrument at the time the accumulation is added to the fund. The remaining portion of the donor-restricted endowment fund that is not classified in permanently restricted net assets is classified as temporarily restricted net assets until those amounts are appropriated for expenditure by the Athenaeum in a manner consistent with the standard of prudence prescribed by state law.</ExplanationTxt>
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        <ExplanationTxt>The Athenaeum accounts for the effect of any uncertain tax positions based on a "more likely than not" threshold to the recognition of the tax positions being sustained based on the technical merits of the position under scrutiny by the applicable taxing authority. If a tax position or positions are deemed to result in uncertainties of those positions, the unrecognized tax benefit is estimated based on a "cumulative probability assessment" that aggregates the estimated tax liability for all uncertain tax positions. The Athenaeum has identified its tax status as a tax-exempt entity and its determination of which activities are related and unrelated as its only significant tax positions; however, the Athenaeum has determined that such tax positions do not result in an uncertainty requiring recognition. The Athenaeum is not currently under examination by any taxing jurisdiction. The Athenaeum's Federal and state tax returns are generally open for examination for three years following the date filed.</ExplanationTxt>
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        <ExplanationTxt>Loss on provision for uncollectible pledge receivable 1,077,227.</ExplanationTxt>
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        <ExplanationTxt>short-term research fellowships, the reseachers work closely with the reference librarians and at the end of their term provide a talk to the athenaeum community on their research conducted at the athenaeum.</ExplanationTxt>
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        <ExplanationTxt>The Trustees adopted a conflict of interest policy in 2007. The policy was expanded in 2010 to include key employees. The expanded policy requires an annual written disclosure document to be signed by each covered individual. The policy requires this process to be completed by the first Trustees meeting following the annual meeting, which takes place in march.</ExplanationTxt>
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      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>charitable remainder trust</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>10 1/2 Beacon Street</AddressLine1Txt>
          <CityNm>boston</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02108</ZIPCd>
        </USAddress>
        <EIN>046607942</EIN>
        <PrimaryActivitiesTxt>trust</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <EntityTypeTxt>T</EntityTypeTxt>
        <OwnershipPct>1.00000</OwnershipPct>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>1</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>