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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KATIE MICHEL</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PRISCILLA A NEWMAN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SIGNE NIELSEN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GRAYSON RUECKERT</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>PAMELA FONTAINE SALVATORE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>YEHUNDA SHMIDMAN TO 124</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JENNIFER P SPEERS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JANET SPITZER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>BEATRICE WELCH</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>AUDREY Z ZINMAN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RAY B OLADAPO-JOHNSON</PersonNm>
        <TitleTxt>PRESIDENT &amp; EXECUTIVE DIRECTOR</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHELE ROSSETTI</PersonNm>
        <TitleTxt>VICE PRESIDENT/COO</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <OfficerInd>X</OfficerInd>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55610</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BARBARA GIORDANO</PersonNm>
        <TitleTxt>DIRECTOR OF DEVELOPMENT</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CATHY DEUTSCH</PersonNm>
        <TitleTxt>DIRECTOR OF HORTICULTURE</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT ODDO</PersonNm>
        <TitleTxt>DIRECTOR OF VISITOR SERVICES</TitleTxt>
        <AverageHoursPerWeekRt>35.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromOrgAmt>103483</ReportableCompFromOrgAmt>
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        <OtherCompensationAmt>0</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>FRANK PERRONE</PersonNm>
        <TitleTxt>DIRECTOR OF FACILITIES/MAINTENANCE</TitleTxt>
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        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>16500</OtherCompensationAmt>
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      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>94878</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>7</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>1</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <CntrctRcvdGreaterThan100KCnt>0</CntrctRcvdGreaterThan100KCnt>
      <MembershipDuesAmt>274759</MembershipDuesAmt>
      <FundraisingAmt>595193</FundraisingAmt>
      <GovernmentGrantsAmt>2870702</GovernmentGrantsAmt>
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      <TotalContributionsAmt>5497900</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>GATE ADMISSIONS</Desc>
        <BusinessCd>713990</BusinessCd>
        <TotalRevenueColumnAmt>187509</TotalRevenueColumnAmt>
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      <ProgramServiceRevenueGrp>
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        <BusinessCd>722514</BusinessCd>
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      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
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        <BusinessCd>611710</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>116741</RelatedOrExemptFuncIncomeAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIPS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>18684</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>18684</RelatedOrExemptFuncIncomeAmt>
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      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>469381</TotalRevenueColumnAmt>
        <ExclusionAmt>469381</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>7164303</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
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        <OtherAmt>3699</OtherAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>237862</SecuritiesAmt>
        <OtherAmt>-3699</OtherAmt>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>234163</TotalRevenueColumnAmt>
        <ExclusionAmt>234163</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
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      <ContriRptFundraisingEventAmt>595193</ContriRptFundraisingEventAmt>
      <FundraisingDirectExpensesAmt>141829</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>0</TotalRevenueColumnAmt>
      </NetIncmFromFundraisingEvtGrp>
      <GrossSalesOfInventoryAmt>232743</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>98412</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>134331</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>134331</RelatedOrExemptFuncIncomeAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>LOCATION FEES &amp; RENTAL</Desc>
        <BusinessCd>532000</BusinessCd>
        <TotalRevenueColumnAmt>311530</TotalRevenueColumnAmt>
        <ExclusionAmt>311530</ExclusionAmt>
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      <OtherRevenueMiscGrp>
        <Desc>PARKING FEES</Desc>
        <BusinessCd>812930</BusinessCd>
        <TotalRevenueColumnAmt>86425</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>86425</RelatedOrExemptFuncIncomeAmt>
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      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>7188386</TotalRevenueColumnAmt>
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        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
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      <CompCurrentOfcrDirectorsGrp>
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        <ProgramServicesAmt>377279</ProgramServicesAmt>
        <ManagementAndGeneralAmt>104046</ManagementAndGeneralAmt>
        <FundraisingAmt>56498</FundraisingAmt>
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        <ProgramServicesAmt>2902744</ProgramServicesAmt>
        <ManagementAndGeneralAmt>813682</ManagementAndGeneralAmt>
        <FundraisingAmt>431919</FundraisingAmt>
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      <PensionPlanContributionsGrp>
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        <ProgramServicesAmt>131633</ProgramServicesAmt>
        <ManagementAndGeneralAmt>29321</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>732383</ProgramServicesAmt>
        <ManagementAndGeneralAmt>207957</ManagementAndGeneralAmt>
        <FundraisingAmt>86234</FundraisingAmt>
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        <ProgramServicesAmt>333411</ProgramServicesAmt>
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        <FundraisingAmt>39366</FundraisingAmt>
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      <FeesForServicesLegalGrp>
        <TotalAmt>24407</TotalAmt>
        <ManagementAndGeneralAmt>24407</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
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        <ManagementAndGeneralAmt>69564</ManagementAndGeneralAmt>
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      <FeesForSrvcInvstMgmntFeesGrp>
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        <ManagementAndGeneralAmt>123188</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>283332</ProgramServicesAmt>
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        <FundraisingAmt>35404</FundraisingAmt>
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        <ProgramServicesAmt>14553</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4451</ManagementAndGeneralAmt>
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      <OfficeExpensesGrp>
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        <ProgramServicesAmt>56909</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5154</ManagementAndGeneralAmt>
        <FundraisingAmt>8898</FundraisingAmt>
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        <ProgramServicesAmt>10535</ProgramServicesAmt>
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        <FundraisingAmt>256</FundraisingAmt>
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        <ProgramServicesAmt>338095</ProgramServicesAmt>
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        <FundraisingAmt>3225</FundraisingAmt>
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        <ProgramServicesAmt>165948</ProgramServicesAmt>
        <ManagementAndGeneralAmt>9219</ManagementAndGeneralAmt>
        <FundraisingAmt>9219</FundraisingAmt>
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        <ProgramServicesAmt>945931</ProgramServicesAmt>
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        <FundraisingAmt>88160</FundraisingAmt>
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      <OtherExpensesGrp>
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        <TotalAmt>81242</TotalAmt>
        <ProgramServicesAmt>71060</ProgramServicesAmt>
        <FundraisingAmt>10182</FundraisingAmt>
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      <AllOtherExpensesGrp>
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        <ProgramServicesAmt>82286</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4996</ManagementAndGeneralAmt>
        <FundraisingAmt>9421</FundraisingAmt>
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      <TotalFunctionalExpensesGrp>
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        <ProgramServicesAmt>6446099</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1526022</ManagementAndGeneralAmt>
        <FundraisingAmt>801859</FundraisingAmt>
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        <EOYAmt>1121691</EOYAmt>
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        <EOYAmt>895044</EOYAmt>
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        <EOYAmt>2272871</EOYAmt>
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      <AccountsReceivableGrp>
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        <EOYAmt>73887</EOYAmt>
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      <InventoriesForSaleOrUseGrp>
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        <EOYAmt>121162</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
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        <EOYAmt>207508</EOYAmt>
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      <LandBldgEquipAccumDeprecAmt>5052000</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
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        <EOYAmt>2745340</EOYAmt>
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        <EOYAmt>12079906</EOYAmt>
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        <EOYAmt>11269839</EOYAmt>
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      <OtherAssetsTotalGrp>
        <BOYAmt>43324612</BOYAmt>
        <EOYAmt>46200534</EOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>73289781</BOYAmt>
        <EOYAmt>76987782</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>701670</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>689156</BOYAmt>
        <EOYAmt>701670</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
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        <EOYAmt>28341978</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>45665438</BOYAmt>
        <EOYAmt>47944134</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>72600625</BOYAmt>
        <EOYAmt>76286112</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>73289781</BOYAmt>
        <EOYAmt>76987782</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>-1585594</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>2395159</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>2875922</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
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        <FormAndLineReferenceDesc>PART III, LINE 4:</FormAndLineReferenceDesc>
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        <ExplanationTxt>WAVE HILL IS SUBJECT TO THE PROVISIONS OF THE FINANCIAL ACCOUNTING STANDARDS BOARD'S ("FASB") ACCOUNTING STANDARDS CODIFICATION ("ASC") TOPIC 740, INCOME TAXES, AS IT RELATES TO ACCOUNTING AND REPORTING FOR POTENTIAL UNCERTAINTY IN INCOME-TAX OBLIGATIONS. BECAUSE OF WAVE HILL'S GENERAL TAX-EXEMPT STATUS, ASC TOPIC 740 HAS NOT HAD, AND IS NOT ANTICIPATED TO HAVE, A MATERIAL IMPACT ON WAVE HILL'S FINANCIAL STATEMENTS.</ExplanationTxt>
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        <ExplanationTxt>ANNUALLY, EACH BOARD MEMBER AND OFFICER OF WAVE HILL ARE REQUIRED TO COMPLETE A CONFLICT OF INTEREST FORM, WHICH IS SUBMITTED TO THE CHAIRMAN FOR REVIEW.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION OF EMPLOYEES: EXECUTIVE COMPENSATION IS REVIEWED ANNUALLY BY THE CHAIR AND EXECUTIVE COMMITTEE. A PERFORMANCE REVIEW IS DONE ANNUALLY. IF A CHANGE TO SALARY IS RECOMMENDED, IT IS APPROVED BY THE FULL BOARD.</ExplanationTxt>
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        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AVAILABILITY OF ORGANIZATION DOCUMENTS: WAVE HILL'S ANNUAL COMPLIANCE FILING AND AUDITED FINANCIAL STATEMENTS ARE AVAILABLE UPON REQUEST. THE COMPLIANCE FILING, WHICH IS OPEN FOR PUBLIC DISCLOSURE, IS POSTED ON WAVE HILL'S WEBSITE.</ExplanationTxt>
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      <SupplementalInformationDetail>
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