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      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>5743499</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>4228405</DepreciationAmt>
        <BookValueAmt>1515094</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>1275647</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>857228</DepreciationAmt>
        <BookValueAmt>418419</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>1229999</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>658452</DepreciationAmt>
        <BookValueAmt>571547</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>10484435</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>19644284</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>13975717</NetUnrealizedGainsInvstAmt>
      <DonatedServicesAndUseFcltsAmt>15410</DonatedServicesAndUseFcltsAmt>
      <RevenueNotReportedAmt>13991127</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>5653157</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>194901</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>-59258</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>135643</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>5788800</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>7910400</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>15410</DonatedServicesUseFcltsAmt>
      <OtherExpensesIncludedAmt>59258</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>74668</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>7835732</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>194901</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>194901</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>8030633</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSERVATION EASEMENTS HELD BY THE DAWES ARBORETUM DO NOT GENERATE REVENUES. MONITORING OR LEGAL DEFENSE OF THOSE EASEMENTS CAN GENERATE EXPENSE, AND SUCH EXPENSE WOULD BE RECORDED ON OUR STATEMENT OF ACTIVITIES UNDER PROGRAM EXPENSES (SALARIES) OR ADMINISTRATION (LEGAL ADVICE) EXPENSES, AND BANK ACCOUNTS DEDICATED TO THOSE PURPOSES WOULD BE DEBITED FOR THE EXPENSE. VOLUNTEERS PARTICIPATE IN RIVER ROUND UP TO KEEP EASEMENTS CLEAN FROM DEBRIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ENDOWMENTS ARE BOARD DESIGNATED AND ARE INTENDED FOR THE GENERAL OPERATIONS OF THE ARBORETUM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM EVALUATES THE INCOME TAX POSITIONS TAKEN OR EXPECTED TO BE TAKEN IN THE INCOME TAX RETURNS FILED BY THE ARBORETUM TO DETERMINE WHETHER A LIABILITY FOR UNCERTAIN POSITIONS EXIST AND WHETHER A LIABILITY FOR SUCH UNCERTAIN POSITIONS SHOULD BE RECOGNIZED. THE ARBORETUM IS EXEMPT FROM INCOME TAXES AND MANAGEMENT BELIEVES THE ARBORETUM HAS NOT ENGAGED IN ACTIVITIES THAT WOULD DISQUALIFY THEM FROM TAX EXEMPT STATUS. THE ARBORETUM'S POLICY WITH REGARDS TO INTEREST AND PENALTIES IS TO RECOGNIZE INTEREST THROUGH INTEREST EXPENSE AND PENALTIES THROUGH OTHER EXPENSE. IN EVALUATING THE ARBORETUM'S TAX PROVISION AND TAX-EXEMPT STATUS, INTERPRETATIONS AND TAX PLANNING STRATEGIES WERE CONSIDERED. THE ARBORETUM BELIEVES THEIR ESTIMATES ARE APPROPRIATE BASED ON THE CURRENT FACTS AND CIRCUMSTANCES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>COST OF GOODS SOLD -59,258.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>COST OF GOODS SOLD 59,258.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>DAWES ARBORETUM SPANS NEARLY 2,000 ACRES AND INCLUDES BEAUTIFUL GARDENS, EXTRAORDINARY PLANT COLLECTIONS AND DISTINCTIVE NATURAL AREAS. IN ADDITION TO 4 MILES OF AUTO TOUR TRIALS, THE ARBORETUM HAS OVER 14 MILES OF WALKING TRIALS THAT GUIDE VISITORS THROUGH SPECIALTY GARDENS, MEADOWS, WETLANDS, AND WOODLANDS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <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>LUKE MESSINGER</PersonNm>
        <TitleTxt>CEO (RESIGNED 3/22/24)</TitleTxt>
        <BaseCompensationFilingOrgAmt>160214</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>8376</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>20038</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>188628</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>PREPARED BY AN OUTSIDE, INDEPENDENT ACCOUNTING FIRM, THE FORM 990 IS REVIEWED AND APPROVED BY THE EXECUTIVE DIRECTOR, SENIOR DIRECTOR OF BUSINESS ADMINISTRATION AND CHIEF OPERATING OFFICER. AFTER THIS REVIEW AND APPROVAL, THE FORM IS SHARED WITH THE BOARD OF TRUSTEES FOR REVIEW AND COMMENT PRIOR TO ITS FILING WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>CONFLICT OF INTEREST ARE SIGNED YEARLY WITH ALL UPDATES SUBMITTED TO THE BOARD CHAIR. IF CONFLICTS OCCUR THE MEMBER MUST ABSTAIN FROM THE VOTE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>CEO, INDEPENDENT PERSONNEL COMMITTEE AND BOARD CHAIR EVALUATES AND MAKES RECOMMENDATION FOR SALARY ADJUSTMENTS, BASED ON PERFORMANCE AND COMPARABLE DATA. WRITTEN INSTRUCTIONS ARE PROVIDED TO HR. COO &amp; CEO EVALUATES YEARLY AND PROVIDES RECOMMENDATIONS FOR SALARY ADJUSTMENTS. SALARY ADJUSTMENTS ARE PROVIDED TO HR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION MAKES AVAILABLE ALL DOCUMENTS REQUIRED BY LAW, EITHER ELECTRONICALLY OR BY MAIL. REQUESTS CAN BE MADE THROUGH: HTTPS://WWW.DAWES.ORG/CONTACT-US/</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROFESSIONAL: PROGRAM SERVICE EXPENSES 493,638. MANAGEMENT AND GENERAL EXPENSES 108,619. FUNDRAISING EXPENSES 239,483. TOTAL EXPENSES 841,740.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS FOR OVERSEEING THE AUDIT AND SELECTING AN INDEPENDENT ACCOUNTANT HAS NOT CHANGED FROM PRIOR YEARS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>