﻿<?xml version="1.0" encoding="utf-8"?>
<Return xmlns="http://www.irs.gov/efile" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.irs.gov/efile" returnVersion="2023v5.1">
  <ReturnHeader binaryAttachmentCnt="0">
    <ReturnTs>2024-11-15T11:46:58-06:00</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <PreparerFirmGrp>
      <PreparerFirmEIN>161131146</PreparerFirmEIN>
      <PreparerFirmName>
        <BusinessNameLine1Txt>BONADIO &amp; CO LLP</BusinessNameLine1Txt>
      </PreparerFirmName>
      <PreparerUSAddress>
        <AddressLine1Txt>171 SULLYS TRAIL</AddressLine1Txt>
        <CityNm>PITTSFORD</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>14534</ZIPCd>
      </PreparerUSAddress>
    </PreparerFirmGrp>
    <ReturnTypeCd>990</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>150532265</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>WATERLOO LIBRARY AND HISTORICAL SOCIETY</BusinessNameLine1Txt>
        <BusinessNameLine2Txt>INC</BusinessNameLine2Txt>
      </BusinessName>
      <BusinessNameControlTxt>WATE</BusinessNameControlTxt>
      <PhoneNum>3155390533</PhoneNum>
      <USAddress>
        <AddressLine1Txt>31 EAST WILLIAMS STREET</AddressLine1Txt>
        <CityNm>WATERLOO</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>13165</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>CYNTHIA PARK</PersonNm>
      <PersonTitleTxt>EXECUTIVE DIRECTOR</PersonTitleTxt>
      <PhoneNum>3155390533</PhoneNum>
      <SignatureDt>2024-11-15</SignatureDt>
      <DiscussWithPaidPreparerInd>1</DiscussWithPaidPreparerInd>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>1</IRSResponsiblePrtyInfoCurrInd>
    <PreparerPersonGrp>
      <PreparerPersonNm>KAREN LYNCH</PreparerPersonNm>
      <PTIN>P01366951</PTIN>
      <PhoneNum>5853811000</PhoneNum>
      <PreparationDt>2024-11-14</PreparationDt>
    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2024-10-15 13:58:12Z</BuildTS>
  </ReturnHeader>
  <ReturnData documentCnt="5">
    <IRS990 documentId="RetDoc1038000001" referenceDocumentId="RetDoc1044400001">
      <PrincipalOfficerNm>CYNTHIA PARK</PrincipalOfficerNm>
      <USAddress>
        <AddressLine1Txt>31 EAST WILLIAMS STREET</AddressLine1Txt>
        <CityNm>WATERLOO</CityNm>
        <StateAbbreviationCd>NY</StateAbbreviationCd>
        <ZIPCd>13165</ZIPCd>
      </USAddress>
      <GrossReceiptsAmt>419627</GrossReceiptsAmt>
      <GroupReturnForAffiliatesInd>0</GroupReturnForAffiliatesInd>
      <Organization501c3Ind>X</Organization501c3Ind>
      <WebsiteAddressTxt>HTTPS://WLHS-NY.COM/</WebsiteAddressTxt>
      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <FormationYr>1875</FormationYr>
      <LegalDomicileStateCd>NY</LegalDomicileStateCd>
      <ActivityOrMissionDesc>WATERLOO LIBRARY AND HISTORICAL SOCIETY PROVIDES PATRONS OF ALL AGES AN INTEGRATIVE, FULL SERVICE LIBRARY AND HISTORICAL EXPERIENCE. AS THE BIRTHPLACE OF MEMORIAL DAY WE STRIVE TO EDUCATE ON THE FOUNDING AND THE SERVICE/SACRIFICE OF ALL OF AMERICA'S VETERANS. WE ENCOURAGE PARTICIPANTS TO ENGAGE IN OUR LEARNING SETTING TO BECOME POSITIVE CITIZENS CREATING A STRONGER CONNECTION WITH LIFE IN THE FINGER LAKES.</ActivityOrMissionDesc>
      <VotingMembersGoverningBodyCnt>8</VotingMembersGoverningBodyCnt>
      <VotingMembersIndependentCnt>8</VotingMembersIndependentCnt>
      <TotalEmployeeCnt>12</TotalEmployeeCnt>
      <TotalVolunteersCnt>0</TotalVolunteersCnt>
      <TotalGrossUBIAmt>0</TotalGrossUBIAmt>
      <NetUnrelatedBusTxblIncmAmt>0</NetUnrelatedBusTxblIncmAmt>
      <PYContributionsGrantsAmt>230546</PYContributionsGrantsAmt>
      <CYContributionsGrantsAmt>64037</CYContributionsGrantsAmt>
      <PYProgramServiceRevenueAmt>295768</PYProgramServiceRevenueAmt>
      <CYProgramServiceRevenueAmt>315002</CYProgramServiceRevenueAmt>
      <PYInvestmentIncomeAmt>267</PYInvestmentIncomeAmt>
      <CYInvestmentIncomeAmt>969</CYInvestmentIncomeAmt>
      <PYOtherRevenueAmt>22422</PYOtherRevenueAmt>
      <CYOtherRevenueAmt>38506</CYOtherRevenueAmt>
      <PYTotalRevenueAmt>549003</PYTotalRevenueAmt>
      <CYTotalRevenueAmt>418514</CYTotalRevenueAmt>
      <PYGrantsAndSimilarPaidAmt>0</PYGrantsAndSimilarPaidAmt>
      <CYGrantsAndSimilarPaidAmt>0</CYGrantsAndSimilarPaidAmt>
      <PYBenefitsPaidToMembersAmt>0</PYBenefitsPaidToMembersAmt>
      <CYBenefitsPaidToMembersAmt>0</CYBenefitsPaidToMembersAmt>
      <PYSalariesCompEmpBnftPaidAmt>198137</PYSalariesCompEmpBnftPaidAmt>
      <CYSalariesCompEmpBnftPaidAmt>196684</CYSalariesCompEmpBnftPaidAmt>
      <PYTotalProfFndrsngExpnsAmt>0</PYTotalProfFndrsngExpnsAmt>
      <CYTotalProfFndrsngExpnsAmt>0</CYTotalProfFndrsngExpnsAmt>
      <CYTotalFundraisingExpenseAmt>44505</CYTotalFundraisingExpenseAmt>
      <PYOtherExpensesAmt>171699</PYOtherExpensesAmt>
      <CYOtherExpensesAmt>200106</CYOtherExpensesAmt>
      <PYTotalExpensesAmt>369836</PYTotalExpensesAmt>
      <CYTotalExpensesAmt>396790</CYTotalExpensesAmt>
      <PYRevenuesLessExpensesAmt>179167</PYRevenuesLessExpensesAmt>
      <CYRevenuesLessExpensesAmt>21724</CYRevenuesLessExpensesAmt>
      <TotalAssetsBOYAmt>2490059</TotalAssetsBOYAmt>
      <TotalAssetsEOYAmt>2598606</TotalAssetsEOYAmt>
      <TotalLiabilitiesBOYAmt>154321</TotalLiabilitiesBOYAmt>
      <TotalLiabilitiesEOYAmt>163319</TotalLiabilitiesEOYAmt>
      <NetAssetsOrFundBalancesBOYAmt>2335738</NetAssetsOrFundBalancesBOYAmt>
      <NetAssetsOrFundBalancesEOYAmt>2435287</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIIInd>X</InfoInScheduleOPartIIIInd>
      <MissionDesc>WATERLOO LIBRARY AND HISTORICAL SOCIETY PROVIDES PATRONS OF ALL AGES AN INTEGRATIVE, FULL SERVICE LIBRARY AND HISTORICAL EXPERIENCE. AS THE BIRTHPLACE OF MEMORIAL DAY WE STRIVE TO EDUCATE ON THE FOUNDING AND THE SERVICE/SACRIFICE OF ALL OF AMERICA'S VETERANS. WE ENCOURAGE PARTICIPANTS TO ENGAGE IN OUR LEARNING SETTING TO BECOME POSITIVE CITIZENS CREATING A STRONGER CONNECTION WITH LIFE IN THE FINGER LAKES.</MissionDesc>
      <SignificantNewProgramSrvcInd>0</SignificantNewProgramSrvcInd>
      <SignificantChangeInd>0</SignificantChangeInd>
      <ExpenseAmt>270750</ExpenseAmt>
      <RevenueAmt>348677</RevenueAmt>
      <Desc>WATERLOO LIBRARY AND HISTORICAL SOCIETY PROVIDES PATRONS OF ALL AGES AN INTEGRATIVE, FULL SERVICE LIBRARY AND HISTORICAL EXPERIENCE. AS THE BIRTHPLACE OF MEMORIAL DAY WE STRIVE TO EDUCATE ON THE FOUNDING AND THE SERVICE/SACRIFICE OF ALL OF AMERICA'S VETERANS. WE ENCOURAGE PARTICIPANTS TO ENGAGE IN OUR LEARNING SETTING TO BECOME POSITIVE CITIZENS CREATING A STRONGER CONNECTION WITH LIFE IN THE FINGER LAKES.</Desc>
      <TotalProgramServiceExpensesAmt>270750</TotalProgramServiceExpensesAmt>
      <DescribedInSection501c3Ind referenceDocumentId="RetDoc1039100001">1</DescribedInSection501c3Ind>
      <ScheduleBRequiredInd referenceDocumentId="RetDoc1234500001">1</ScheduleBRequiredInd>
      <PoliticalCampaignActyInd>0</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>0</LobbyingActivitiesInd>
      <SubjectToProxyTaxInd>0</SubjectToProxyTaxInd>
      <DonorAdvisedFundInd referenceDocumentId="RetDoc1040000001">0</DonorAdvisedFundInd>
      <ConservationEasementsInd referenceDocumentId="RetDoc1040000001">0</ConservationEasementsInd>
      <CollectionsOfArtInd referenceDocumentId="RetDoc1040000001">0</CollectionsOfArtInd>
      <CreditCounselingInd referenceDocumentId="RetDoc1040000001">0</CreditCounselingInd>
      <DonorRstrOrQuasiEndowmentsInd>0</DonorRstrOrQuasiEndowmentsInd>
      <ReportLandBuildingEquipmentInd referenceDocumentId="RetDoc1040000001">1</ReportLandBuildingEquipmentInd>
      <ReportInvestmentsOtherSecInd referenceDocumentId="RetDoc1040000001">0</ReportInvestmentsOtherSecInd>
      <ReportProgramRelatedInvstInd referenceDocumentId="RetDoc1040000001">0</ReportProgramRelatedInvstInd>
      <ReportOtherAssetsInd referenceDocumentId="RetDoc1040000001">0</ReportOtherAssetsInd>
      <ReportOtherLiabilitiesInd referenceDocumentId="RetDoc1040000001">0</ReportOtherLiabilitiesInd>
      <IncludeFIN48FootnoteInd referenceDocumentId="RetDoc1040000001">0</IncludeFIN48FootnoteInd>
      <IndependentAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</IndependentAuditFinclStmtInd>
      <ConsolidatedAuditFinclStmtInd referenceDocumentId="RetDoc1040000001">0</ConsolidatedAuditFinclStmtInd>
      <SchoolOperatingInd>0</SchoolOperatingInd>
      <ForeignOfficeInd>0</ForeignOfficeInd>
      <ForeignActivitiesInd>0</ForeignActivitiesInd>
      <MoreThan5000KToOrgInd>0</MoreThan5000KToOrgInd>
      <MoreThan5000KToIndividualsInd>0</MoreThan5000KToIndividualsInd>
      <ProfessionalFundraisingInd>0</ProfessionalFundraisingInd>
      <FundraisingActivitiesInd>0</FundraisingActivitiesInd>
      <GamingActivitiesInd>0</GamingActivitiesInd>
      <OperateHospitalInd>0</OperateHospitalInd>
      <GrantsToOrganizationsInd>0</GrantsToOrganizationsInd>
      <GrantsToIndividualsInd>0</GrantsToIndividualsInd>
      <ScheduleJRequiredInd>0</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>0</RelatedEntityInd>
      <RelatedOrganizationCtrlEntInd>0</RelatedOrganizationCtrlEntInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>0</TrnsfrExmptNonChrtblRltdOrgInd>
      <ActivitiesConductedPrtshpInd>0</ActivitiesConductedPrtshpInd>
      <ScheduleORequiredInd>1</ScheduleORequiredInd>
      <IRPDocumentCnt>0</IRPDocumentCnt>
      <IRPDocumentW2GCnt>0</IRPDocumentW2GCnt>
      <BackupWthldComplianceInd>1</BackupWthldComplianceInd>
      <EmployeeCnt>12</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>8</GoverningBodyVotingMembersCnt>
      <IndependentVotingMemberCnt>8</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>0</LocalChaptersInd>
      <Form990ProvidedToGvrnBodyInd>1</Form990ProvidedToGvrnBodyInd>
      <ConflictOfInterestPolicyInd>1</ConflictOfInterestPolicyInd>
      <AnnualDisclosureCoveredPrsnInd>0</AnnualDisclosureCoveredPrsnInd>
      <RegularMonitoringEnfrcInd>0</RegularMonitoringEnfrcInd>
      <WhistleblowerPolicyInd>0</WhistleblowerPolicyInd>
      <DocumentRetentionPolicyInd>0</DocumentRetentionPolicyInd>
      <CompensationProcessCEOInd>1</CompensationProcessCEOInd>
      <CompensationProcessOtherInd>1</CompensationProcessOtherInd>
      <InvestmentInJointVentureInd>0</InvestmentInJointVentureInd>
      <StatesWhereCopyOfReturnIsFldCd>NY</StatesWhereCopyOfReturnIsFldCd>
      <UponRequestInd>X</UponRequestInd>
      <BooksInCareOfDetail>
        <BusinessName>
          <BusinessNameLine1Txt>CYNTHIA PARK</BusinessNameLine1Txt>
        </BusinessName>
        <PhoneNum>3155390533</PhoneNum>
        <USAddress>
          <AddressLine1Txt>31 EAST WILLIAMS STREET</AddressLine1Txt>
          <CityNm>WATERLOO</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>13165</ZIPCd>
        </USAddress>
      </BooksInCareOfDetail>
      <Form990PartVIISectionAGrp>
        <PersonNm>COREEN LOWRY</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES HUGHES</PersonNm>
        <TitleTxt>VICE PRESIDENT</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LYNN PATTI</PersonNm>
        <TitleTxt>SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KATHY CHASE</PersonNm>
        <TitleTxt>TREASURER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KAREN BURCROFF</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DENISE OSBORNE</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DUKE ARGETSINGER</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>AJ TRAHMS</PersonNm>
        <TitleTxt>BOARD MEMBER</TitleTxt>
        <AverageHoursPerWeekRt>1.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CYNTHIA PARK</PersonNm>
        <TitleTxt>EXECUTIVE DIRECTOR</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>42834</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>17373</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>42834</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>17373</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>0</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>0</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <GovernmentGrantsAmt>25000</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>39037</AllOtherContributionsAmt>
      <TotalContributionsAmt>64037</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>PROPERTY TAX REVENUE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>302286</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>302286</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>DUES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>11597</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>11597</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>FEES AND FINES</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>1119</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1119</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>315002</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>969</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>969</RelatedOrExemptFuncIncomeAmt>
      </InvestmentIncomeGrp>
      <FundraisingGrossIncomeAmt>6913</FundraisingGrossIncomeAmt>
      <FundraisingDirectExpensesAmt>1113</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>5800</TotalRevenueColumnAmt>
        <ExclusionAmt>5800</ExclusionAmt>
      </NetIncmFromFundraisingEvtGrp>
      <GrossSalesOfInventoryAmt>952</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>952</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>952</RelatedOrExemptFuncIncomeAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>31754</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>31754</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>31754</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>418514</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>348677</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>5800</ExclusionAmt>
      </TotalRevenueGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>60206</TotalAmt>
        <ProgramServicesAmt>1806</ProgramServicesAmt>
        <ManagementAndGeneralAmt>30103</ManagementAndGeneralAmt>
        <FundraisingAmt>28297</FundraisingAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>118554</TotalAmt>
        <ProgramServicesAmt>82614</ProgramServicesAmt>
        <ManagementAndGeneralAmt>26756</ManagementAndGeneralAmt>
        <FundraisingAmt>9184</FundraisingAmt>
      </OtherSalariesAndWagesGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>2742</TotalAmt>
        <ProgramServicesAmt>82</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1371</ManagementAndGeneralAmt>
        <FundraisingAmt>1289</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>15182</TotalAmt>
        <ProgramServicesAmt>6528</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5466</ManagementAndGeneralAmt>
        <FundraisingAmt>3188</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>8672</TotalAmt>
        <ProgramServicesAmt>2602</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6070</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>2851</TotalAmt>
        <ProgramServicesAmt>2651</ProgramServicesAmt>
        <ManagementAndGeneralAmt>200</ManagementAndGeneralAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>498</TotalAmt>
        <ProgramServicesAmt>214</ProgramServicesAmt>
        <ManagementAndGeneralAmt>179</ManagementAndGeneralAmt>
        <FundraisingAmt>105</FundraisingAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>13167</TotalAmt>
        <ProgramServicesAmt>6782</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4032</ManagementAndGeneralAmt>
        <FundraisingAmt>2353</FundraisingAmt>
      </OfficeExpensesGrp>
      <OccupancyGrp>
        <TotalAmt>33486</TotalAmt>
        <ProgramServicesAmt>31142</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2344</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>425</TotalAmt>
        <ProgramServicesAmt>183</ProgramServicesAmt>
        <ManagementAndGeneralAmt>153</ManagementAndGeneralAmt>
        <FundraisingAmt>89</FundraisingAmt>
      </ConferencesMeetingsGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>54262</TotalAmt>
        <ProgramServicesAmt>50464</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3798</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>15191</TotalAmt>
        <ProgramServicesAmt>14128</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1063</ManagementAndGeneralAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>PROGRAM EXPENSE</Desc>
        <TotalAmt>47377</TotalAmt>
        <ProgramServicesAmt>47377</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BOOKS</Desc>
        <TotalAmt>23242</TotalAmt>
        <ProgramServicesAmt>23242</ProgramServicesAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>DUES</Desc>
        <TotalAmt>935</TotalAmt>
        <ProgramServicesAmt>935</ProgramServicesAmt>
      </OtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>396790</TotalAmt>
        <ProgramServicesAmt>270750</ProgramServicesAmt>
        <ManagementAndGeneralAmt>81535</ManagementAndGeneralAmt>
        <FundraisingAmt>44505</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>498166</BOYAmt>
        <EOYAmt>405412</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>317314</BOYAmt>
        <EOYAmt>351460</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <PledgesAndGrantsReceivableGrp>
        <BOYAmt>10500</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </PledgesAndGrantsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <EOYAmt>16168</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>1831479</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>716724</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>1031093</BOYAmt>
        <EOYAmt>1114755</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>628470</BOYAmt>
        <EOYAmt>706295</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>4516</BOYAmt>
        <EOYAmt>4516</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>2490059</BOYAmt>
        <EOYAmt>2598606</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>15901</BOYAmt>
        <EOYAmt>14953</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>138420</BOYAmt>
        <EOYAmt>148366</EOYAmt>
      </DeferredRevenueGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>154321</BOYAmt>
        <EOYAmt>163319</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>1936989</BOYAmt>
        <EOYAmt>2239209</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>398749</BOYAmt>
        <EOYAmt>196078</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>2335738</BOYAmt>
        <EOYAmt>2435287</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>2490059</BOYAmt>
        <EOYAmt>2598606</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>21724</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>77825</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>1</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </AcctCompileOrReviewBasisGrp>
      <FSAuditedInd>0</FSAuditedInd>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PubliclySupportedOrg509a2Ind>X</PubliclySupportedOrg509a2Ind>
      <GiftsGrantsContrisRcvd509Grp>
        <CurrentTaxYearMinus4YearsAmt>38457</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>61876</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>220699</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>230546</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>64037</CurrentTaxYearAmt>
        <TotalAmt>615615</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>240833</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>258470</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>278535</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>295768</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>315002</CurrentTaxYearAmt>
        <TotalAmt>1388608</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>279290</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>320346</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>499234</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>526314</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>379039</CurrentTaxYearAmt>
        <TotalAmt>2004223</TotalAmt>
      </Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp>
        <TotalAmt>0</TotalAmt>
      </AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp>
        <TotalAmt>0</TotalAmt>
      </SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp>
        <TotalAmt>0</TotalAmt>
      </SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>2004223</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>3973</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>584</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3094</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>267</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>969</CurrentTaxYearAmt>
        <TotalAmt>8887</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>3973</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>584</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3094</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>267</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>969</CurrentTaxYearAmt>
        <TotalAmt>8887</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <OtherIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>3051</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2794</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>2773</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14202</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>31754</CurrentTaxYearAmt>
        <TotalAmt>54574</TotalAmt>
      </OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>286314</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>323724</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>505101</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>540783</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>411762</CurrentTaxYearAmt>
        <TotalAmt>2067684</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.96930</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.98340</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.00430</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.00450</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <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="RetDoc1040000001">
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>1687068</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>657460</DepreciationAmt>
        <BookValueAmt>1029608</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>75613</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>59264</DepreciationAmt>
        <BookValueAmt>16349</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>68798</OtherCostOrOtherBasisAmt>
        <BookValueAmt>68798</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>1114755</TotalBookValueLandBuildingsAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF THE ORGANIZATION REVIEWS THE 990 PRIOR TO SUBMISSION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF DIRECTORS REVIEWS AND APPROVES COMPENSATION FOR THE ORGANIZATION'S TOP MANAGEMENT AND KEY EMPLOYEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS ARE MADE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>WATERLOO LIBARY AND HISTORICAL SOCIETY, INC. HAS A BOARD COMMITTEE WHO ASSUMES RESPONSIBILITY FOR OVERSIGHT OF THE REVIEW AND SELECTION OF THE INDEPENDENT ACCOUNTANT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>