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      <TotalRevenuePerForm990Amt>2011519</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>1718571</TotExpnsEtcAuditedFinclStmtAmt>
      <DonatedServicesUseFcltsAmt>620</DonatedServicesUseFcltsAmt>
      <OtherExpensesIncludedAmt>93868</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>94488</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>1624083</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>34013</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>34013</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>1658096</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM HAS A MUSEUM OF ANTIQUE FURNITURE THAT IS HELD FOR EDUCATIONAL, RESEARCH AND CURATORIAL PURPOSES. THE COLLECTION IS NOT CAPITALIZED. EACH OF THE ITEMS IS PRESERVED AND CARED FOR, AND ACTIVITIES VERIFYING THEIR EXISTENCE AND ASSESSING THEIR CONDITION ARE PERFORMED CONTINUALLY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE. THE ARBORETUM FOLLOWS THE INCOME TAX STANDARD FOR UNCERTAIN TAX POSITIONS. THE APPLICATION OF THIS STANDARD HAS NO IMPACT ON THE ARBORETUM'S FINANCIAL STATEMENTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>ARBORETUM SHOP MATERIALS &amp; MERCHANDISE 25,786. FUNDRAISING EVENT DIRECT EXPENSES 68,082.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>ARBORETUM SHOP MATERIALS &amp; MERCHANDISE 25,786. FUNDRAISING EVENT DIRECT EXPENSES 68,082.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041300001">
      <FundraisingEventInformationGrp>
        <Event1Nm>TWILIGHT AUCTION</Event1Nm>
        <GrossReceiptsEvent1Amt>107715</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>52830</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>54885</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>6487</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>588</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>249</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>11631</OtherDirectExpensesEvent1Amt>
        <Event2Nm>PUMPKIN DAYS</Event2Nm>
        <GrossReceiptsEvent2Amt>32439</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>6500</CharitableContriEvent2Amt>
        <GrossRevenueEvent2Amt>25939</GrossRevenueEvent2Amt>
        <FoodAndBeverageEvent2Amt>1113</FoodAndBeverageEvent2Amt>
        <EntertainmentEvent2Amt>2675</EntertainmentEvent2Amt>
        <OtherDirectExpensesEvent2Amt>15457</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>3</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>65433</GrossReceiptsOtherEventsAmt>
        <CharitableContriOtherEventsAmt>750</CharitableContriOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>64683</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>29882</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>205587</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>60080</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>145507</GrossRevenueTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>6487</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>1701</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>2924</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>56970</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>68082</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>77425</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>300 YEAR OLD IPSWICH HOUSE (KIT) - UNASSEMBLED</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>68000</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV OF THE DONATED P</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>HEATHER SAUNDERS (TRUSTEE) AND ERIC CHAPMAN (TRUSTEE) ARE RELATED BY MARRIAGE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S ASSET MANAGEMENT COMMITTEE REVIEWS AND APPROVES THE FORM 990 PRIOR TO FILING. THE ORGANIZATION PROVIDES A COPY TO EACH VOTING MEMBER OF THE ORGANIZATION'S GOVERNING BODY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALLY, THE OFFICERS AND BOARD MEMBERS DISCLOSE INTERESTS THAT COULD GIVE RISE TO CONFLICTS. MANAGEMENT CONTINUOUSLY MONITORS AND ENFORCES THIS POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>INDEPENDENT BOARD MEMBERS REVIEW AND APPROVE COMPENSATION USING DATA OF SIMILARLY QUALIFIED PERSONS IN FUNCTIONALLY COMPARABLE POSITIONS AT SIMILARLY SITUATED ORGANIZATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST AT THE ARBORETUM'S ADMINISTRATIVE OFFICE DURING NORMAL BUSINESS HOURS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS NOT CHANGED ITS OVERSIGHT PROCESS OF THE AUDIT OR SELECTION PROCESS OF THE INDEPENDENT ACCOUNTANT.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>