﻿<?xml version="1.0" encoding="utf-8"?>
<Return returnVersion="2021v4.0" xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2023-05-15T12:28:45-07:00</ReturnTs>
    <TaxPeriodEndDt>2022-06-30</TaxPeriodEndDt>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2021-07-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>046151731</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>TRUSTEES OF THE PUBLIC LIBRARY OF THE CITY OF BOSTON</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>TRUS</BusinessNameControlTxt>
      <PhoneNum>6175365400</PhoneNum>
      <USAddress>
        <AddressLine1Txt>700 BOYLSTON STREET</AddressLine1Txt>
        <CityNm>BOSTON</CityNm>
        <StateAbbreviationCd>MA</StateAbbreviationCd>
        <ZIPCd>02116</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Ellen Donaghey</PersonNm>
      <PersonTitleTxt>Chief Financial Officer</PersonTitleTxt>
      <PhoneNum>6175365400</PhoneNum>
      <SignatureDt>2023-05-15</SignatureDt>
    </BusinessOfficerGrp>
    <AdditionalFilerInformation>
      <TrustedCustomerGrp>
        <TrustedCustomerCd>1</TrustedCustomerCd>
        <OOBSecurityVerificationCd>11</OOBSecurityVerificationCd>
        <LastSubmissionRqrOOBCd>1</LastSubmissionRqrOOBCd>
        <AuthenticationAssuranceLevelCd>AAL2</AuthenticationAssuranceLevelCd>
        <ProfilePasswordChangeInd>X</ProfilePasswordChangeInd>
      </TrustedCustomerGrp>
    </AdditionalFilerInformation>
    <TaxYr>2021</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="8">
    <IRS990 documentId="R000001" referenceDocumentId="R000007" softwareId="21013178" softwareVersionNum="v1.00">
      <PrincipalOfficerNm>ELLEN DONAGHEY</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>700 BOYLSTON STREET</AddressLine1Txt>
        <CityNm>BOSTON</CityNm>
        <StateAbbreviationCd>MA</StateAbbreviationCd>
        <ZIPCd>02116</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>31224540</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>WWW.BPL.ORG</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1848</FormationYr>
      <LegalDomicileStateCd>MA</LegalDomicileStateCd>
      <ActivityOrMissionDesc>The Boston Public Library provides educational and cultural enrichment free to all by engaging the public through programming and active spaces, restoring and preserving our history, providing access to borrow from our vast collection of books and electronic databases and other materials and caring for the Public's Special Collections.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>17</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>17</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>487</TotalEmployeeCnt>
      <TotalVolunteersCnt>177</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>8614888</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>8379644</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>122454</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>104454</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>7254368</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>4332743</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>258149</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>2052007</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>16249859</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>14868848</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>3375807</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>3284866</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>0</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>6441673</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>11221762</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>9817480</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>14506628</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>6432379</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>362220</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>99754907</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>89216582</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>1350473</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>3230356</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>98404434</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>85986226</NetAssetsOrFundBalancesEOYAmt>
      <MissionDesc>The Boston Public Library provides educational and cultural enrichment free to all by engaging the public through programming and active spaces, restoring and preserving our history, providing access to borrow from our vast collection of books and electronic databases and other materials and caring for the Public's Special Collections.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>12319097</ExpenseAmt>
      <GrantAmt>0</GrantAmt>
      <RevenueAmt>104454</RevenueAmt>
      <Desc>The Boston Public Library (BPL) is an extraordinary institution that has served the citizens of Boston since 1848. Founded as the first municipal library and the first public library to lend books, the Boston Public Library is dedicated to the advancement of learning and is "Free to All," as is carved in the facade of the historic McKim building in Copley Square. The BPL encompasses a Central Library, twenty-five vibrant neighborhood libraries, a robust website, and classes and programs for all ages. The Library's collection of more than 23 million items includes circulating books, eBooks, DVDs, and music, as well as research and special collections that encompass rare manuscripts, prints, photographs, drawings, maps, posters, and more. The Boston Public Library's Kirstein Business Library and Innovation Center, Norman B. Leventhal Map Center, and Collections of Distinction such as the personal library of John Adams, the Anti-Slavery collection, the Thomas Pennant Barton Collection of Shakespeare, and the Boston Pictorial Archive attract researchers and scholars from across the city and around the world. In fiscal year 2022, Boston Public Library hosted 6,474 public programs reaching 163,240 people, had 2.2m in person visitors, and loaned 5.6 million items. Of those 5.6 million lends, more than 3.7 million were digital downloads of e-books and audiobooks. In the same fiscal year, the Boston Public Library helped 99,425 Massachusetts residents - adults, children, and teens - sign up for new library cards, hosted 164,815 free computer sessions and enabled 385,964 free wireless internet sessions. Engaging the Public Through Programming + Active Spaces: The Library offers a variety of programs for all Children, teens and adults including: Future Readers Club, Homework Assistance, Local &amp; Family History, Writing programs, Theatre Productions, The Lowell Lecture Series, Copley Concerts, Never Too Late Programs, Children's Music and Storytelling. Serving the Public with Improving technology: BPL is a national leader in library service technology. The Library has been improving the Library's IT and business systems, increasing access to knowledge through the provision and creation of digital content, and closing the digital divide by providing the public improved access to the kinds of cutting edge technology that ensure equity. Restoring and Preserving our History: At an estimated one million manuscripts, holdings are particularly strong in medieval and early Renaissance manuscripts, colonial Boston and New England, and the American anti-slavery movement. The library is also home to hundreds of archival collections with strengths in local business, political, cultural, and social history. Caring for the Public's Special Collections The Library maintains and cares for of one the world's most important public collections of art, rare books, maps and other special objects and make these precious objects, owned by the public, accessible to patrons today and far into future generations. Statewide Collection Development &amp; Access: This program pro</Desc>
      <TotalOtherProgSrvcExpenseAmt>0</TotalOtherProgSrvcExpenseAmt>
      <TotalOtherProgSrvcGrantAmt>0</TotalOtherProgSrvcGrantAmt>
      <TotalOtherProgSrvcRevenueAmt>0</TotalOtherProgSrvcRevenueAmt>
      <TotalProgramServiceExpensesAmt>12319097</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="R000002">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="R000003">1</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd>0</DonorAdvisedFundInd>
      <ConservationEasementsInd>0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="R000004">1</CollectionsOfArtInd>
      <CreditCounselingInd>0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd referenceDocumentId="R000004">1</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="R000004">1</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd>0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd>0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd>0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="R000004">1</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd>0</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="R000004">1</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="R000004">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd referenceDocumentId="R000005">1</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
      <ScheduleJRequiredInd referenceDocumentId="R000006">1</ScheduleJRequiredInd>
      <TaxExemptBondsInd>0</TaxExemptBondsInd>
      <EngagedInExcessBenefitTransInd>0</EngagedInExcessBenefitTransInd>
      <PYExcessBenefitTransInd>0</PYExcessBenefitTransInd>
      <LoanOutstandingInd>0</LoanOutstandingInd>
      <GrantToRelatedPersonInd>0</GrantToRelatedPersonInd>
      <BusinessRlnWithOrgMemInd>0</BusinessRlnWithOrgMemInd>
      <BusinessRlnWithFamMemInd>0</BusinessRlnWithFamMemInd>
      <BusinessRlnWith35CtrlEntInd>0</BusinessRlnWith35CtrlEntInd>
      <DeductibleNonCashContriInd>0</DeductibleNonCashContriInd>
      <DeductibleArtContributionInd>0</DeductibleArtContributionInd>
      <TerminateOperationsInd>0</TerminateOperationsInd>
      <PartialLiquidationInd>0</PartialLiquidationInd>
      <DisregardedEntityInd>0</DisregardedEntityInd>
      <RelatedEntityInd referenceDocumentId="R000008">1</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <InfoInScheduleOPartVInd>X</InfoInScheduleOPartVInd>
      <IRPDocumentCnt>148</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>487</EmployeeCnt>
      <EmploymentTaxReturnsFiledInd>1</EmploymentTaxReturnsFiledInd>
      <UnrelatedBusIncmOverLimitInd>0</UnrelatedBusIncmOverLimitInd>
      <ForeignFinancialAccountInd>0</ForeignFinancialAccountInd>
      <ProhibitedTaxShelterTransInd>0</ProhibitedTaxShelterTransInd>
      <TaxablePartyNotificationInd>0</TaxablePartyNotificationInd>
      <NondeductibleContributionsInd>0</NondeductibleContributionsInd>
      <QuidProQuoContributionsInd>0</QuidProQuoContributionsInd>
      <Form8282PropertyDisposedOfInd>0</Form8282PropertyDisposedOfInd>
      <RcvFndsToPayPrsnlBnftCntrctInd>0</RcvFndsToPayPrsnlBnftCntrctInd>
      <PayPremiumsPrsnlBnftCntrctInd>0</PayPremiumsPrsnlBnftCntrctInd>
      <IndoorTanningServicesInd>0</IndoorTanningServicesInd>
      <SubjToTaxRmnrtnExPrchtPymtInd>0</SubjToTaxRmnrtnExPrchtPymtInd>
      <SubjectToExcsTaxNetInvstIncInd>0</SubjectToExcsTaxNetInvstIncInd>
      <InfoInScheduleOPartVIInd>X</InfoInScheduleOPartVIInd>
      <GoverningBodyVotingMembersCnt>17</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>17</IndependentVotingMemberCnt>
      <FamilyOrBusinessRlnInd>0</FamilyOrBusinessRlnInd>
      <DelegationOfMgmtDutiesInd>0</DelegationOfMgmtDutiesInd>
      <ChangeToOrgDocumentsInd>0</ChangeToOrgDocumentsInd>
      <MaterialDiversionOrMisuseInd>0</MaterialDiversionOrMisuseInd>
      <MembersOrStockholdersInd>0</MembersOrStockholdersInd>
      <ElectionOfBoardMembersInd>0</ElectionOfBoardMembersInd>
      <DecisionsSubjectToApprovaInd>0</DecisionsSubjectToApprovaInd>
      <MinutesOfGoverningBodyInd>1</MinutesOfGoverningBodyInd>
      <MinutesOfCommitteesInd>1</MinutesOfCommitteesInd>
      <OfficerMailingAddressInd>0</OfficerMailingAddressInd>
      <LocalChaptersInd>1</LocalChaptersInd>
      <PoliciesReferenceChaptersInd>1</PoliciesReferenceChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>1</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>1</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>0</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>0</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>0</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>0</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>MA</StatesWhereCopyOfReturnIsFldCd>
      <OwnWebsiteInd>X</OwnWebsiteInd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <PersonNm>ELLEN DONAGHEY</PersonNm>
        <PhoneNum>6178592345</PhoneNum>
        <USAddress>
          <AddressLine1Txt>700 BOYLSTON STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02116</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <InfoInScheduleOPartVIIInd>X</InfoInScheduleOPartVIIInd>
      <NoListedPersonsCompensatedInd>X</NoListedPersonsCompensatedInd>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID J LEONARD</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>220025</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>29786</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL R COLFORD</PersonNm>
        <TitleTxt>Director Of Library Services</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>153546</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>24405</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>EAMON SHELTON</PersonNm>
        <TitleTxt>Director Of Operations</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>139330</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>37215</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PRISCILLA FOLEY</PersonNm>
        <TitleTxt>Director Of Neighborhood Services</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>135930</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>40538</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LAURA S IRMSCHER</PersonNm>
        <TitleTxt>Chief Of Collections(resigned January 2022 )</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>15791</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>122963</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>37169</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ELLEN DONAGHEY</PersonNm>
        <TitleTxt>Chief Financial Officer (CFO)</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>139355</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>22990</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ANNE SMART</PersonNm>
        <TitleTxt>BRANCH LIBRARIAN(RETIRED CY 2021)</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>134675</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>22071</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KURT MANSPERGER</PersonNm>
        <TitleTxt>Chief Technology Officer</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>1</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>3296</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>106901</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27747</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAMELA CARVER</PersonNm>
        <TitleTxt>Clerk &amp; Executive Assistant To The President</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>102075</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>10512</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SARAH ZAPHIRIS</PersonNm>
        <TitleTxt>Chief Of Staff and Strategy as of 11/15/2021</TitleTxt>
        <AverageHoursPerWeekRt>35</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>12579</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>1295</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JABARI ASIM</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PRISCILLA H DOUGLAS</PersonNm>
        <TitleTxt>Chair effective 5/18/2021,Trustee prior</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>EVELYN ARANA-ORTIZ</PersonNm>
        <TitleTxt>Vice Chair,Interim Chair Jan-May2021,Trustee prior</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ZAMAWA ARENAS</PersonNm>
        <TitleTxt>Trustee-Term ended May 2022</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BEN BRADLEE JR</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHERYL CRONIN</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LINDA DORCENA FORRY</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN T HAILER</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JEFFREY B HAWKINS</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHYNAH TYLER</PersonNm>
        <TitleTxt>Trustee</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NAVJEET BAL</PersonNm>
        <TitleTxt>Trustee effective January 2021</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOSEPH S BERMAN</PersonNm>
        <TitleTxt>Trustee effective January 2021</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOYCE LINEHAN</PersonNm>
        <TitleTxt>Trustee -Term ended May 2022</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL RUSH</PersonNm>
        <TitleTxt>Trustee effective January 2021</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHRISTIAN J WESTRA</PersonNm>
        <TitleTxt>Trustee effective January 2021</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOSE C MASSO III</PersonNm>
        <TitleTxt>Trustee effective May 2022</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DOCTOR LYNN PERRY WOOTEN</PersonNm>
        <TitleTxt>Trustee effective May 2022</TitleTxt>
        <AverageHoursPerWeekRt>1</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>19087</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>1267379</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>253728</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>41</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>OCLC Forest Press</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>P O Box 714746</AddressLine1Txt>
            <CityNm>Cincinnati</CityNm>
            <StateAbbreviationCd>OH</StateAbbreviationCd>
            <ZIPCd>452714746</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Cataloging Services</ServicesDesc>
        <CompensationAmt>228262</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Innovative Interfaces Inc</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1900 Powell Street</AddressLine1Txt>
            <AddressLine2Txt>Suite 400</AddressLine2Txt>
            <CityNm>Emeryville</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94608</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Polaris Server Software Maintenance</ServicesDesc>
        <CompensationAmt>163283</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Internet Archive</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>300 Funston Avenue</AddressLine1Txt>
            <CityNm>San Francisco</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>941182116</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Digitization/Scanning</ServicesDesc>
        <CompensationAmt>154853</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>Securitas Security Services USA Inc</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>P O Box 403412</AddressLine1Txt>
            <CityNm>Atlanta</CityNm>
            <StateAbbreviationCd>GA</StateAbbreviationCd>
            <ZIPCd>303843412</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Security</ServicesDesc>
        <CompensationAmt>130754</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>American Program Bureau Inc</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>One Gateway Center Suite 751</AddressLine1Txt>
            <CityNm>Newton</CityNm>
            <StateAbbreviationCd>MA</StateAbbreviationCd>
            <ZIPCd>02458</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Speaker Agency</ServicesDesc>
        <CompensationAmt>106750</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>5</CntrctRcvdGreaterThan100KCnt>
      <InfoInScheduleOPartVIIIInd>X</InfoInScheduleOPartVIIIInd>
      <FederatedCampaignsAmt>0</FederatedCampaignsAmt>
      <MembershipDuesAmt>0</MembershipDuesAmt>
      <FundraisingAmt>121634</FundraisingAmt>
      <RelatedOrganizationsAmt>2898284</RelatedOrganizationsAmt>
      <GovernmentGrantsAmt>4353306</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>1006420</AllOtherContributionsAmt>
      <NoncashContributionsAmt>0</NoncashContributionsAmt>
      <TotalContributionsAmt>8379644</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>NETWORK MEMBERSHIP DUES</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>104454</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>104454</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </ProgramServiceRevenueGrp>
      <TotalOthProgramServiceRevGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </TotalOthProgramServiceRevGrp>
      <TotalProgramServiceRevenueAmt>104454</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1423970</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1423970</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>0</ExclusionAmt>
      </IncmFromInvestBondProceedsGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>21832</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>21832</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossRentsGrp>
        <RealAmt>1661217</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>0</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>1661217</RealAmt>
        <PersonalAmt>0</PersonalAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>1661217</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1661217</ExclusionAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>19264465</SecuritiesAmt>
        <OtherAmt>0</OtherAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>16355692</SecuritiesAmt>
        <OtherAmt>0</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>2908773</SecuritiesAmt>
        <OtherAmt>0</OtherAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>2908773</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2908773</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <ContriRptFundraisingEventAmt>121634</ContriRptFundraisingEventAmt>
      <OtherRevenueMiscGrp>
        <Desc>Commissions</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>269588</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>269588</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueMiscGrp>
        <Desc>Mcgovern Trust Fund Distribution</Desc>
        <BusinessCd>611710</BusinessCd>
        <TotalRevenueColumnAmt>99130</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>99130</ExclusionAmt>
      </OtherRevenueMiscGrp>
      <MiscellaneousRevenueGrp>
        <TotalRevenueColumnAmt>240</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>0</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>240</ExclusionAmt>
      </MiscellaneousRevenueGrp>
      <OtherRevenueTotalAmt>368958</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>14868848</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>104454</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>6384750</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>2942881</TotalAmt>
        <ProgramServicesAmt>2383733</ProgramServicesAmt>
        <ManagementAndGeneralAmt>559148</ManagementAndGeneralAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>118484</TotalAmt>
        <ProgramServicesAmt>95972</ProgramServicesAmt>
        <ManagementAndGeneralAmt>22512</ManagementAndGeneralAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>223501</TotalAmt>
        <ProgramServicesAmt>181036</ProgramServicesAmt>
        <ManagementAndGeneralAmt>42465</ManagementAndGeneralAmt>
      </OtherEmployeeBenefitsGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>60000</TotalAmt>
        <ManagementAndGeneralAmt>60000</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>31000</TotalAmt>
        <ManagementAndGeneralAmt>31000</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>0</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>227230</TotalAmt>
        <ManagementAndGeneralAmt>227230</ManagementAndGeneralAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>1261739</TotalAmt>
        <ProgramServicesAmt>1022008</ProgramServicesAmt>
        <ManagementAndGeneralAmt>239731</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>36533</TotalAmt>
        <ProgramServicesAmt>29592</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6941</ManagementAndGeneralAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>789296</TotalAmt>
        <ProgramServicesAmt>639330</ProgramServicesAmt>
        <ManagementAndGeneralAmt>149966</ManagementAndGeneralAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>1310594</TotalAmt>
        <ProgramServicesAmt>1061581</ProgramServicesAmt>
        <ManagementAndGeneralAmt>249013</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <TravelGrp>
        <TotalAmt>61433</TotalAmt>
        <ProgramServicesAmt>49761</ProgramServicesAmt>
        <ManagementAndGeneralAmt>11672</ManagementAndGeneralAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>19124</TotalAmt>
        <ProgramServicesAmt>15490</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3634</ManagementAndGeneralAmt>
      </ConferencesMeetingsGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>990357</TotalAmt>
        <ProgramServicesAmt>802189</ProgramServicesAmt>
        <ManagementAndGeneralAmt>188168</ManagementAndGeneralAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>50315</TotalAmt>
        <ProgramServicesAmt>40755</ProgramServicesAmt>
        <ManagementAndGeneralAmt>9560</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>35766</TotalAmt>
        <ManagementAndGeneralAmt>35766</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>Books &amp; related materials</Desc>
        <TotalAmt>3332510</TotalAmt>
        <ProgramServicesAmt>3332510</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Equipment rental/maintenance</Desc>
        <TotalAmt>1492002</TotalAmt>
        <ProgramServicesAmt>1208522</ProgramServicesAmt>
        <ManagementAndGeneralAmt>283480</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Program/Admin</Desc>
        <TotalAmt>1169942</TotalAmt>
        <ProgramServicesAmt>1169942</ProgramServicesAmt>
        <ManagementAndGeneralAmt>0</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Security</Desc>
        <TotalAmt>340579</TotalAmt>
        <ProgramServicesAmt>275869</ProgramServicesAmt>
        <ManagementAndGeneralAmt>64710</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>13342</TotalAmt>
        <ProgramServicesAmt>10807</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2535</ManagementAndGeneralAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>14506628</TotalAmt>
        <ProgramServicesAmt>12319097</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2187531</ManagementAndGeneralAmt>
        <FundraisingAmt>0</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>927478</BOYAmt>
        <EOYAmt>799940</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>22497514</BOYAmt>
        <EOYAmt>22583052</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <AccountsReceivableGrp>
        <BOYAmt>1681179</BOYAmt>
        <EOYAmt>1691295</EOYAmt>
      </AccountsReceivableGrp>
      <ReceivablesFromOfficersEtcGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </RcvblFromDisqualifiedPrsnGrp>
      <OthNotesLoansReceivableNetGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>441350</BOYAmt>
        <EOYAmt>319183</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>1481489</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>1136255</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>365836</BOYAmt>
        <EOYAmt>345234</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>73841550</BOYAmt>
        <EOYAmt>63477878</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <InvestmentsProgramRelatedGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </IntangibleAssetsGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>99754907</BOYAmt>
        <EOYAmt>89216582</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>666619</BOYAmt>
        <EOYAmt>1361387</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>451084</BOYAmt>
        <EOYAmt>1125080</EOYAmt>
      </DeferredRevenueGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>232770</BOYAmt>
        <EOYAmt>743889</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>1350473</BOYAmt>
        <EOYAmt>3230356</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>5151552</BOYAmt>
        <EOYAmt>5321660</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>93252882</BOYAmt>
        <EOYAmt>80664566</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>98404434</BOYAmt>
        <EOYAmt>85986226</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>99754907</BOYAmt>
        <EOYAmt>89216582</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>362220</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>-13916871</NetUnrlzdGainsLossesInvstAmt>
      <DonatedServicesAndUseFcltsAmt>0</DonatedServicesAndUseFcltsAmt>
      <InvestmentExpenseAmt>0</InvestmentExpenseAmt>
      <PriorPeriodAdjustmentsAmt>0</PriorPeriodAdjustmentsAmt>
      <OtherChangesInNetAssetsAmt>1136443</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="R000002" softwareId="21013178" softwareVersionNum="v1.00">
      <GovernmentalUnitInd>X</GovernmentalUnitInd>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="R000003" softwareId="21013178" softwareVersionNum="v1.00">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="R000004" softwareId="21013178" softwareVersionNum="v1.00">
      <HeldWorksArtGrp>
        <RevenuesIncludedAmt>0</RevenuesIncludedAmt>
        <AssetsIncludedAmt>0</AssetsIncludedAmt>
      </HeldWorksArtGrp>
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>77942460</BeginningYearBalanceAmt>
        <ContributionsAmt>6934</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-10069873</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>3075628</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>169822</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>258230</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>64375841</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>61526120</BeginningYearBalanceAmt>
        <ContributionsAmt>284321</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>19536257</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>2936666</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>162901</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>304671</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>77942460</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>62960155</BeginningYearBalanceAmt>
        <ContributionsAmt>14100</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>1812784</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>2835684</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>158297</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>266938</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>61526120</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>61872714</BeginningYearBalanceAmt>
        <ContributionsAmt>93355</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>4241687</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>2844024</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>158501</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>245076</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>62960155</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>60125636</BeginningYearBalanceAmt>
        <ContributionsAmt>1167112</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>3702773</InvestmentEarningsOrLossesAmt>
        <GrantsOrScholarshipsAmt>2696832</GrantsOrScholarshipsAmt>
        <OtherExpendituresAmt>156688</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>269287</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>61872714</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>1</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>1</EndowmentsHeldRelatedOrgInd>
      <RelatedOrgListSchRInd>1</RelatedOrgListSchRInd>
      <LandGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>0</OtherCostOrOtherBasisAmt>
        <BookValueAmt>0</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>0</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>0</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>0</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>0</DepreciationAmt>
        <BookValueAmt>0</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>1161059</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>836913</DepreciationAmt>
        <BookValueAmt>324146</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <InvestmentCostOrOtherBasisAmt>0</InvestmentCostOrOtherBasisAmt>
        <OtherCostOrOtherBasisAmt>320430</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>299342</DepreciationAmt>
        <BookValueAmt>21088</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>345234</TotalBookValueLandBuildingsAmt>
      <FederalIncomeTaxLiabilityAmt>0</FederalIncomeTaxLiabilityAmt>
      <OtherLiabilitiesOrgGrp>
        <Desc>DUE TO THE CITY OF BOSTON</Desc>
        <Amt>743889</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>743889</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>2384684</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-13916872</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>296265</DonatedServicesAndUseFcltsAmt>
      <RecoveriesPriorYearGrantsAmt>0</RecoveriesPriorYearGrantsAmt>
      <OtherRevenueAmt>1136443</OtherRevenueAmt>
      <RevenueNotReportedAmt>-12484164</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>14868848</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>0</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>0</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>0</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>14868848</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>14802893</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>296265</DonatedServicesUseFcltsAmt>
      <PriorYearAdjustmentsAmt>0</PriorYearAdjustmentsAmt>
      <LossesReportedAmt>0</LossesReportedAmt>
      <OtherExpensesIncludedAmt>0</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>296265</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>14506628</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>0</InvestmentExpensesNotIncld2Amt>
      <OtherExpensesNotIncludedAmt>0</OtherExpensesNotIncludedAmt>
      <ExpensesNotRptFinclStmtAmt>0</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>14506628</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part III, Line 1</FormAndLineReferenceDesc>
        <ExplanationTxt>EXPLANATION: TERMS FOR NOT REPORTING ASSETS PER SFAS 116 -THE LIBRARY MAINTAINS COLLECTIONS INCLUDING ARTWORK, RARE BOOKS COLLECTIONS AND HISTORICAL TREASURES 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, 2022, 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 SUPPLEMENTAL FINANCIAL INFORMATION THE LIBRARY IS A PUBLIC ENTITY AND THEREFORE DOES NOT FOLLOW FASB PRONOUNCEMENTS ISSUED AFTER NOVEMBER 30, 1989</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part III, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>LIBRARY BOASTS OVER ONE MILLION RARE BOOKS AND MANUSCRIPTS, A WEALTH OF 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 COLLECTIONS THE PERSONAL LIBRARY OF JOHN ADAMS. DUE TO THE EXTENT OF THE COLLECTIONS, MANY ITEMS ARE DISPLAYED ON A ROTATING BASIS. THESE UNIQUE SPECIAL EXHIBITS ARE SHOWN IN THE RESEARCH LIBRARY AND OFFER THE PUBLIC AN OPPORTUNITY TO VIEW BOOKS AND SPECIAL DOCUMENTS WHICH ARE USUALLY ONLY ACCESSIBLE TO REGISTERED READERS IN THE RARE BOOKS READING ROOM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 1b</FormAndLineReferenceDesc>
        <ExplanationTxt>ITEM '1B' LABELED CONTRIBUTIONS ARE AMOUNTS ADDED TO THE ENDOWMENT FUNDS FOR CURRENT AND ALL PRIOR YEARS LISTED HERE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 1c</FormAndLineReferenceDesc>
        <ExplanationTxt>ITEM '1C' LABELED NET INVESTMENTS EARNINGS, GAINS, AND LOSSES SHOWS ACTUAL INCREASE OR DECREASE IN INVESTMENTS FOR CURRENT AND ALL PRIOR YEARS LISTED HERE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 1d</FormAndLineReferenceDesc>
        <ExplanationTxt>ITEM '1D' LABELED GRANTS OR SCHOLARSHIPS SHOWS 5% DISTRIBUTION WITHDRAWN FROM THE ENDOWMENT FUNDS FOR CURRENT AND ALL PRIOR YEARS LISTED HERE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 1e</FormAndLineReferenceDesc>
        <ExplanationTxt>ITEM '1E' LABELED OTHER EXPENDITURES FOR FACILITIES AND PROGRAMS SHOWS DISTRIBUTION TO TRINITY CHURCH IN THE CITY OF BOSTON FOR CURRENT AND ALL PRIOR YEARS LISTED HERE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part V, Line 1f</FormAndLineReferenceDesc>
        <ExplanationTxt>ITEM '1F' LABELED ADMINISTRATIVE EXPENSES SHOWS ACTUAL INVESTMENT MANAGEMENT AND ADMINISTRATIVE EXPENSES FOR CURRENT AND ALL PRIOR YEARS LISTED HERE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <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>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, Line 2b</FormAndLineReferenceDesc>
        <ExplanationTxt>DONATED SERVICES AND USE OF FACILITIES ($296,265) IS THE FAIR MARKET VALUE OF FREE RENTAL SPACE PROVIDED TO THE BOSTON PUBLIC LIBRARY FUND INC.($48,046) AND TO THE ASSOCIATES OF THE BOSTON PUBLIC LIBRARY INC. ($11,139) AND TO THE NORMAN B. LEVENTHAL MAP &amp; EDUCATION CENTER INC. ($163,630). ALL OPERATING WITHIN THE COPLEY LOCATION. IT ALSO INCLUDES BOSTON RED SOX TICKETS DONATED TO THE LIBRARY WITH AN ESTIMATED VALUE OF ($73,450).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule D, Part XI, Line 2d</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER REVENUE INCLUDES $1,097,044 IN EXPENSES PAID OUT DIRECTLY TO THE LIBRARY'S VENDORS BY THE UNIVERSAL SERVICE ADMINISTRATIVE COMPANY (USAC). THIS IS TO SUPPORT THE LIBRARY'S INFORMATION TECHNOLOGY INFRASTRUCTURE. IT ALSO INCLUDES $39,399 IN LEASE INTEREST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="R000005" softwareId="21013178" softwareVersionNum="v1.00">
      <FundraisingEventInformationGrp>
        <Event1Nm>Boston Marathon race</Event1Nm>
        <GrossReceiptsEvent1Amt>123634</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>0</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>123634</GrossRevenueEvent1Amt>
        <CashPrizesEvent1Amt>0</CashPrizesEvent1Amt>
        <NonCashPrizesEvent1Amt>0</NonCashPrizesEvent1Amt>
        <RentFacilityCostsEvent1Amt>0</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>2434</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>0</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>22819</OtherDirectExpensesEvent1Amt>
        <FoodAndBeverageOtherEventsAmt>0</FoodAndBeverageOtherEventsAmt>
        <EntertainmentOtherEventsAmt>0</EntertainmentOtherEventsAmt>
        <GrossReceiptsTotalAmt>123634</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>0</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>123634</GrossRevenueTotalEventsAmt>
        <CashPrizesTotalEventsAmt>0</CashPrizesTotalEventsAmt>
        <NonCashPrizesTotalEventsAmt>0</NonCashPrizesTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>0</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>2434</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>0</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>22819</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>25253</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>98381</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="R000006" softwareId="21013178" softwareVersionNum="v1.00">
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>0</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>DAVID J LEONARD</PersonNm>
        <TitleTxt>President</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>190000</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>26371</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>3654</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>19802</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>9984</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>249811</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL R COLFORD</PersonNm>
        <TitleTxt>Director Of Library Services</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>150722</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>2824</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>13819</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>10586</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>177951</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>EAMON SHELTON</PersonNm>
        <TitleTxt>Director Of Operations</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>136726</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>2604</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>12540</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>24675</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>176545</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LAURA S IRMSCHER</PersonNm>
        <TitleTxt>Chief Of Collections(resigned January 2022 )</TitleTxt>
        <BaseCompensationFilingOrgAmt>15560</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>121166</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>231</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>1797</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>12488</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>24681</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>15791</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>160132</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PRISCILLA FOLEY</PersonNm>
        <TitleTxt>Director Of Neighborhood Services</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>135930</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>12234</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>28305</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>176469</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ELLEN DONAGHEY</PersonNm>
        <TitleTxt>Chief Financial Officer (CFO)</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>136726</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>2629</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>12542</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>10448</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>162345</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ANNE SMART</PersonNm>
        <TitleTxt>BRANCH LIBRARIAN</TitleTxt>
        <BaseCompensationFilingOrgAmt>0</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>58628</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>76047</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>12121</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>0</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>9951</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>0</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>156747</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule J, Part I, Line 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION FOR CEO/EXECUTIVE DIRECTORS IS SET BY THE CITY OF BOSTON'S HUMAN RESOURCES DEPARTMENT</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="R000007" softwareId="21013178" softwareVersionNum="v1.00">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IV, Line 29</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOSTON RED SOX ORGANIZATION DONATED 1600 GAME TICKETS WITH AN ESTIMATED FAIR MARKET VALUE OF $73,450 TO THE BOSTON PUBLIC LIBRARY. ALSO PLEASE NOTE THAT THE FEDERAL COMMUNICATIONS COMMISSION (FCC) "ERATE" PROGRAM HAS BEEN SUPPORTING THE OPERATING COSTS RELATED TO THE BOSTON PUBLIC LIBRARY'S INFORMATION TECHNOLOGY INFRASTRUCTURE. THIS MONEY IS PAID BY THE FCC DIRECTLY TO BPL VENDORS AND IS INCLUDED IN THE BPL'S AUDITED FINANCIAL STATEMENTS. FOR BPL'S FISCAL YEAR 2022 $1,097,044 HAS BEEN PAID OUT TO BPL VENDORS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 2a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 487 LISTED HERE IS THE TOTAL # OF EMPLOYEES PAID UNDER THE LIBRARY DEPARTMENT FOR CALENDAR YEAR 2021. THE CITY OF BOSTON PROCESSES THE PAYROLL FOR THE LIBRARY AND FILES THE W-3 TRANSMITTAL OF WAGE AND TAX STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part V, Line 2b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CITY OF BOSTON PROCESSES THE LIBRARY'S ENTIRE PAYROLL. THEY ALSO FILE ALL THE REQUIRED UNEMPLOYMENT TAXES FOR THE LIBRARY UNDER THE CITY OF BOSTON FEDERAL ID.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 8a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CLERK TAKES THE MINUTES OF ALL THE TRUSTEE MEETINGS AND COMMITTEE MEETINGS AND ONCE THE MINUTES ARE APPROVED THEY ARE POSTED ON THE LIBRARY'S WEBSITE: BPL.ORG.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, Line 8b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CLERK TAKES THE MINUTES OF ALL THE TRUSTEE MEETINGS AND COMMITTEE MEETINGS AND ONCE THE MINUTES ARE APPROVED THEY ARE POSTED ON THE LIBRARY'S WEBSITE: BPL.ORG.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>A DRAFT OF FORM 990 WAS PROVIDED TO THE GOVERNING BODY FOR REVIEW AND APPROVAL BEFORE IT WAS FILED. THIS FORM 990 IS PREPARED/REVIEWED/FILED BY THE ASSISTANT PRINCIPAL ACCOUNTANT. IT IS ALSO REVIEWED AND APPROVED BY THE SUPERVISOR OF ACCOUNTING AND THE CHIEF FINANCIAL OFFICER. ALL THE FINANCIAL NUMBERS LISTED ON THEM CORRESPONDS TO THE AUDITED FINANCIAL STATEMENT TOTALS. ACCOUNTING SCHEDULES HAVE BEEN CREATED TO BACK UP ALL THE DATA ENTERED.</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 ITS RECEIPT AT TIME OF HIRE AND ANNUALLY THEREAFTER. ALSO, WITHIN THE FIRST 30 DAYS OF HIRE AND EVERY 2 YEARS THEREAFTER THEY ARE REQUIRED TO COMPLETE AN ONLINE TRAINING PROGRAM AT HTTP://WWW.MUNIPROG.ETH.STATE.MA.US/</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 14</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL PUBLIC ENTITIES ARE COVERED BY STATE LAW.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, Line 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION FOR OFFICERS AND KEY EMPLOYEES ARE SET BY THE CITY OF BOSTON'S HUMAN RESOURCES DEPARTMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS ARE AVAILABLE ON THE LIBRARY'S WEBSITE: BPL.ORG. ALL POLICIES INCLUDING CONFLICT OF INTEREST POLICY ARE AVAILABLE ON THE CITY'S HUB WHICH ALL EMPLOYEES HAVE ACCESS TO AND THEY ARE ALSO INCLUDED ON THE CITY OF BOSTON EMPLOYEE HANDBOOK.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VII, Section B, Line 1(C)</FormAndLineReferenceDesc>
        <ExplanationTxt>$ AMOUNTS LISTED FOR INDEPENDENT CONTRACTORS IS FOR CALENDAR YEAR 2021.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VIII, Line 1c</FormAndLineReferenceDesc>
        <ExplanationTxt>FUNDRAISING EVENTS--MARATHON TEAM DONATIONS RECEIVED TOTALED $123,634.00 FOR FISCAL YEAR 2022(SEE SCHEDULE G) OF WHICH $2000.00 CAME DIRECTLY FROM RELATED ORGANIZATION THE BOSTON PUBLIC LIBRARY FUND, INC AND $121,634 CAME DIRECTLY FROM DONORS. THE $2000 IS INCLUDED ON FORM 990, PART VIII LINE 1D.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VIII, Line 1d</FormAndLineReferenceDesc>
        <ExplanationTxt>LISTED HERE AMOUNTS RECEIVED DIRECTLY FROM THE BOSTON PUBLIC LIBRARY FUND INC. $1,973,743 WHICH $661,449.45 THE LIBRARY PAID OUT TO THE NORMAN B. LEVENTHAL MAP &amp; EDUCATION CENTER INC. AND FROM THE ASSOCIATES OF THE BOSTON PUBLIC LIBRARY INC. $924,541, GRAND TOTAL $2,898,284.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VIII, Line 2a - 2e</FormAndLineReferenceDesc>
        <ExplanationTxt>AMOUNT LISTED HERE $104,454 NEXT TO THE HEADING 'NETWORK MEMBERSHIP DUES' IS MEMBERSHIP DUES PAID BY OTHER ORGANIZATIONS WHOSE MEMBERS/PATRONS USE THE METRO BOSTON LIBRARY NETWORK SYSTEM (MBLN).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 5</FormAndLineReferenceDesc>
        <ExplanationTxt>LISTED HERE $0 BECAUSE THE CITY OF BOSTON PROCESSES AND PAYS FOR ALL OF THE LIBRARY'S PAYROLL EXPENDITURES TO ITS EMPLOYEES. THE LIBRARY THEN REIMBURSES THE CITY OF BOSTON A PORTION OF THE TOTAL PAYROLL EXPENDITURES PAID BY GIFTS &amp; GRANTS WHICH IS LISTED ON FORM 990 PART IX LINE 7.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 7</FormAndLineReferenceDesc>
        <ExplanationTxt>THE $ AMOUNT LISTED HERE IS THE PORTION OF THE TOTAL PAYROLL SALARY EXPENDITURES THE LIBRARY REIMBURSED THE CITY OF BOSTON.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 8</FormAndLineReferenceDesc>
        <ExplanationTxt>THE $ AMOUNT LISTED HERE IS THE PORTION OF PENSION BENEFITS THE LIBRARY REIMBURSED THE CITY OF BOSTON.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>THE $ AMOUNT LISTED HERE IS THE PORTION OF OTHER EMPLOYEE BENEFITS THE LIBRARY REIMBURSED THE CITY OF BOSTON.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 10</FormAndLineReferenceDesc>
        <ExplanationTxt>LISTED HERE $0 FOR PAYROLL TAXES BECAUSE THE CITY OF BOSTON PROCESSES AND PAYS THIS EXPENSE FOR ALL LIBRARY EMPLOYEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 21</FormAndLineReferenceDesc>
        <ExplanationTxt>PAYMENTS TO AFFILIATES-$990,356.90 WAS PAID TO THE NORMAN B. LEVENTHAL MAP &amp; EDUCATION CENTER INC. OF WHICH $861,449.55 CAME FROM THE BOSTON PUBLIC LIBRARY FUND INC. AND $128,907.35 FROM THE LIBRARY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part IX, Line 23</FormAndLineReferenceDesc>
        <ExplanationTxt>INSURANCE TOTAL OF $35,766 CONSISTS OF CAR INSURANCE $26,908, EXECUTIVES LIABILITY INSURANCE $4,702 AMD DISHONEST EMPLOYEE INSURANCE $4,156.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER CHANGES IN NET ASSETS OR FUND BALANCES--THE FEDERAL COMMUNICATIONS COMMISSION (FCC) "ERATE" PROGRAM HAS FOR YEARS BEEN SUPPORTING THE OPERATING COSTS RELATED TO THE BOSTON PUBLIC LIBRARY'S INFORMATION TECHNOLOGY INFRASTRUCTURE. THE "ERATE" PROGRAM IS ADMINISTERED BY THE UNIVERSAL SERVICE ADMINISTRATION COMPANY. THIS MONEY IS PAID DIRECTLY TO BPL VENDORS AND SINCE 2021 HAS BEEN INCLUDED IN THE BPL AUDITED FINANCIAL STATEMENTS. IN FISCAL YEAR 2022 $1,097,044 WAS PAID OUT TO BPL VENDORS. ALSO INCLUDED HERE IS $39,344 FOR NONPROFITS ACCOUNTING FOR LEASES.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="R000008" softwareId="21013178" softwareVersionNum="v1.00">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BOSTON PUBLIC LIBRARY FUND INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>700 BOYLSTON STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02116</ZIPCd>
        </USAddress>
        <EIN>043150560</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING FOR BPL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>ASSOCIATES OF THE BOSTON PUBLIC LIBRARY INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>700 BOYLSTON STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02116</ZIPCd>
        </USAddress>
        <EIN>042900822</EIN>
        <PrimaryActivitiesTxt>FUNDRAISING FOR BPL</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>7</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>THE CITY OF BOSTON</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>ONE CITY HALL SQUARE</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02116</ZIPCd>
        </USAddress>
        <EIN>046011380</EIN>
        <PrimaryActivitiesTxt>CITY GOVERNMENT</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(c)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>6</PublicCharityStatusTxt>
        <DirectControllingNACd>N/A</DirectControllingNACd>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <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>1</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>1</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>BOSTON PUBLIC LIBRARY FUND INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>c</TransactionTypeTxt>
        <InvolvedAmt>1983743</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACTUAL $</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>BOSTON PUBLIC LIBRARY FUND INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>n</TransactionTypeTxt>
        <InvolvedAmt>48046</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FAIR MARKET VALUE</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ASSOCIATES OF THE BOSTON PUBLIC LIBRARY INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>c</TransactionTypeTxt>
        <InvolvedAmt>924541</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>ACTUAL $</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>ASSOCIATES OF THE BOSTON PUBLIC LIBRARY INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>n</TransactionTypeTxt>
        <InvolvedAmt>11139</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>FAIR MARKET VALUE</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule R, Part V, Line 1c</FormAndLineReferenceDesc>
        <ExplanationTxt>Gift, Grant, or capital contribution from related organization(s)-The Boston Public Library received $ 1,973,743 from The Boston Public Library Fund Inc. which $661,449.55 the library paid out to the Norman B. Leventhal Map &amp; Education Center Inc. and $924,541 from The Associates Of The Boston Public Library to support library operations. The Library operates as a separate department within the City Of Boston operations, with the City paying most of its costs. In fiscal year 2022 the Library's expenses it paid on its own totaled about 15 million and as a department of the City general fund about 39 million.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule R, Part V, Line 1n</FormAndLineReferenceDesc>
        <ExplanationTxt>Sharing of facilities, equipment, mailing lists, or other assets related with related organization(s)-The Boston Public Library provided at the Copley location free rent space to The Boston Public Library Fund Inc. with an estimated fair market value of $48,046.75 and to the Associates Of The Boston Public Library Inc. with an estimated fair market value of $11,139.00. Although not considered a related organization to the Library, The Norman B. Leventhal Map &amp; Education Center Inc. was also provided free rent space at the Copley location with an estimated fair market value of $163,630.50.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleR>
  </ReturnData>
</Return>