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      <TotalLiabilityAmt>938155</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>7585762</TotalRevEtcAuditedFinclStmtAmt>
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        <FormAndLineReferenceDesc>Schedule D, Part III, Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>TERMS FOR NOT REPORTING ASSETS PER SFAS 116 THE LIBRARY MAINTAINS COLLECTIONS INCLUDING ARTWORK,RARE COLLECTION BOOKS AND HISTORICAL TREASURERS THAT HAVE BEEN PURCHASED OR DONATED. THESE ITEMS ARE PRESERVED AND CARED FOR AND MANY ARE DISPLAYED IN PUBLIC EXHIBITIONS. THE LIBRARY DOES NOT HAVE A FORMAL POLICY THAT REQUIRES PROCEEDS FROM THE SALE OF THESE ITEMS TO BE USED TO EXPAND THE COLLECTIONS THROUGH ADDITIONAL ACQUISITIONS. HOWEVER, HISTORICALLY, THE LIBRARY HAS NOT SOLD WORKS OF ARTS AND HISTORICAL TREASURES. AS OF JUNE 30, 2016, THE LIBRARY HAD NO INTENTION TO SELL COLLECTIONS OR USE PROCEEDS TO RESTORE CURRENT HOLDINGS OR EXPAND THE COLLECTION THROUGH ADDITIONAL ACQUISITIONS-----IN ADDITION- FORM 990 SCHEDULE D, PART XIII-EXPLANATION: PART XIII SUPPPLEMENTAL FINANCIAL INFORMATION THE LIBRARY IS A PUBLIC ENTITIY AND THEREFORE DOES NOT FOLLOW FASB PRONOUNCEMENTS ISSUED AFTER NOVEMBER 30, 1989.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part III, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE LIBRARY BOASTS OVER ONE MILLIION RARE BOOKS AND MANUSCRIPTS, A WEALTH OF MAPS, MUSICAL SCORES AND PRINTS. AMONG ITS LARGE COLLECTIONS, THE LIBRARY HOLDS SEVERAL FIRST EDITION FOLIOS BY WILLIAM SHAKESPEARE, ORIGINAL MUSIC FROM MOZART TO PROKOFIEV'S "PETER AND THE WOLF", AND IN ITS RARE BOOK COLLECTION, THE PERSONAL LIBRARY OF JOHN ADAMS. DUE TO THE EXTENT OF THE COLLECTIONS, MANY ITEMS ARE DISPLAYED ON A ROTATING BASIS. THESE UNIQUE SPECIAL EXIBITS ARE SHOWN IN THE RESEARCH LIBRARY AND OFFER THE PUBLIC AN OPPORTUNITY TO VIEW BOOKS AND SPECIAL DOCUMENTS WHICH ARE USUALLY ONLY ACCCESSIBLE TO REGISTERED READERS IN THE RARE BOOKS READING ROOM.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>ENDOWMENT FUNDS ARE USED TO SUPPORT THE ACTIVITIES AND PROGRAMS OF THE PUBLIC LIBRARY OF THE CITY OF BOSTON.</ExplanationTxt>
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        <PersonNm>MICHAEL R COLFORD</PersonNm>
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        <PersonNm>JAMES MEADE</PersonNm>
        <TitleTxt>Superrintendent Of Library Buildings</TitleTxt>
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        <PersonNm>ELLEN DONAGHEY</PersonNm>
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        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
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        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION FOR CEO/EXECUTIVE DIRECTORS ARE SET BY THE CITY OF BOSTON'S HUMAN RESOURCES DEPARTMENT.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A DRAFT FORM 990 WAS PROVIDED TO THE GOVERNING BODY FOR REVIEW BEFORE IT WAS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>All employees are provided a summary of the Conflict of Interest Law and must sign and complete an acknowledgement of receipt of it at time of hire and annually thereafter. Also, within the first 30 days of hire and every two years thereafter they are required to complete an online training program at http://www.muniprog.eth.state.ma.us/.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 16a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION FOR OFFICERS AND KEY EMPLOYEES ARE SET BY THE CITY OF BOSTON'S HUMAN RESOURCE DEPARTMENT.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part IX, Line 11g</FormAndLineReferenceDesc>
        <ExplanationTxt>Mold Removal $335,345, Cataloging Services $283,414, Digitization Services $213,710, Print Department Cataloging $198,595, Conservation/Restoration $124,133, Presidential Search $120,772, Clerical/Office/Admin $79,117, Maintenance/Facilities $54,110, Design Services $37,643, Landscaping $33,997, Program Services $7,765, Grand Total $1,488,601.</ExplanationTxt>
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          <AddressLine1Txt>700 BOYLSTON STREET</AddressLine1Txt>
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          <StateAbbreviationCd>MA</StateAbbreviationCd>
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          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02116</ZIPCd>
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