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        <CurrentTaxYearMinus2YearsAmt>257954</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>324129</CurrentTaxYearMinus1YearAmt>
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        <CurrentTaxYearMinus2YearsAmt>6330</CurrentTaxYearMinus2YearsAmt>
        <TotalAmt>26399</TotalAmt>
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        <CurrentTaxYearMinus3YearsAmt>1943071</CurrentTaxYearMinus3YearsAmt>
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        <CurrentTaxYearMinus2YearsAmt>72200</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>52512</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>65000</CurrentTaxYearAmt>
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        <CurrentTaxYearMinus2YearsAmt>70536</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>121597</CurrentTaxYearMinus1YearAmt>
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        <CurrentTaxYearMinus1YearAmt>445726</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>407775</CurrentTaxYearAmt>
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      <InvestmentIncomePYPct>0.13300</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
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    <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>
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      <PreservationOpenSpaceInd>X</PreservationOpenSpaceInd>
      <HistoricStructureInd>X</HistoricStructureInd>
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      <TotalAcreageCnt>461.45</TotalAcreageCnt>
      <HistoricStructureEasementsCnt>1</HistoricStructureEasementsCnt>
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      <WrittenPolicyMonitoringInd>1</WrittenPolicyMonitoringInd>
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        <ContributionsAmt>95665</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-53993</InvestmentEarningsOrLossesAmt>
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        <EndYearBalanceAmt>1746758</EndYearBalanceAmt>
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        <OtherExpendituresAmt>30309</OtherExpendituresAmt>
        <EndYearBalanceAmt>1717349</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
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        <InvestmentEarningsOrLossesAmt>52246</InvestmentEarningsOrLossesAmt>
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        <EndYearBalanceAmt>1515931</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
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        <EndYearBalanceAmt>1528086</EndYearBalanceAmt>
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      <OtherAssetsOrgGrp>
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      <OtherAssetsOrgGrp>
        <Desc>SECURITY DEPOSITS</Desc>
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      <OtherAssetsOrgGrp>
        <Desc>DEVELOPMENT PROPERTY</Desc>
        <BookValueAmt>575000</BookValueAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSERVATION EASEMENT ACQUISITION COSTS ARE EXPENSED AS INCURRED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INTENDED USE OF THE ORGANIZATION'S ENDOWMENT FUNDS IS TO PROVIDE A SUSTAINABLE SOURCE OF FUNDS TO SUPPORT EFFORTS TO PRESERVE THE UNIQUE CHARACTER AND NATURAL RESOURCES OF HARVARD, MASSACHUSETTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>ASC 740-10, "INCOME TAXES," REQUIRES THE ORGANIZATION TO EVALUATE AND DISCLOSE TAX POSITIONS THAT COULD HAVE AN EFFECT ON THE ORGANIZATION'S FINANCIAL STATEMENTS. HARVARD CONSERVATION TRUST REPORTS ITS ACTIVITIES TO THE INTERNAL REVENUE SERVICE AND TO THE COMMONWEALTH OF MASSACHUSETTS ON AN ANNUAL BASIS. THESE INFORMATIONAL RETURNS ARE GENERALLY SUBJECT TO AUDIT AND REVIEW BY THE GOVERNMENTAL AGENCIES FOR A PERIOD OF THREE YEARS AFTER FILING. SUBSTANTIALLY ALL OF HARVARD CONSERVATION TRUST'S INCOME, EXPENDITURES AND ACTIVITIES RELATE TO ITS EXEMPT PURPOSE, THEREFORE, MANAGEMENT HAS DETERMINED THAT HARVARD CONSERVATION TRUST IS NOT SUBJECT TO UNRELATED BUSINESS INCOME TAXES AND WILL CONTINUE TO QUALIFY AS A TAX-EXEMPT NOT-FOR-PROFIT ENTITY.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION HAS THREE CLASSES OF MEMBERS: LIFE MEMBERS, REGULAR MEMBERS, AND CHARTER MEMBERS. LIFE MEMBERS AND REGULAR MEMBERS HAVING VOTING RIGHTS AT ALL MEMBER MEETINGS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>LIFE MEMBERS AND REGULAR MEMBERS HAVE THE RIGHT TO ELECT TRUSTEES OF THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>LIFE MEMBERS AND REGULAR MEMBERS ALL HAVE THE RIGHT TO APPROVE CHANGES TO THE BY-LAWS AND CONSTITUTION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CHAIR OF THE FINANCE COMMITTEE AND THE EXECUTIVE DIRECTOR WILL REVIEW THE FORM 990 AND MAKE IT AVAILABLE TO ALL OF THE TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL TRUSTEES, EMPLOYEES, CLOSE RELATIVES, MAJOR DONORS, RELATED ORGANIZATIONS, AND OTHER INSIDERS, AS DEFINED IN THE ORGANIZATION'S CONFLICT OF INTEREST POLICY, ARE REQUIRED TO BRING ANY INVLOVEMENT IN A CONFLICT OR APPEARANCE OF CONFLICT TO THE ATTENTION OF THE DESIGNATED TRUSTEE. THE TRUSTEE SELECTED TO MANAGE CONFLICT OF INTEREST ISSUES WILL DEVELOP A RECOMMENDED COURSE OF ACTION TO BE SUBMITTED TO THE FULL BOARD OF TRUSTEES AS THE FINAL ARBITER OF THE ISSUE. UNTIL THE BOARD OF TRUSTEES VOTE ON A RECOMMENDED COURSE OF ACTION, THE INDIVIDUAL INVOLVED IS REQUIRED TO REFRAIN FROM PARTICIPATING FROM THE QUESTIONABLE ACTIVITY AND RECUSE AND ABSENT HIM/HERSELF FROM DISCUSSIONS PERTAINING TO THE MATTER.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>A SPECIAL COMMITTEE COMPRISED OF MEMBERS OF THE GOVERNANCE COMMITTEE, OFFICERS, AND TRUSTEES EVALUATES AND RECOMMENDS EXECUTIVE COMPENSATION LEVELS THAT THE BOARD OF TRUSTEES THEN REVIEWS. THE SPECIAL COMMITTEE CONSIDERS SEVERAL FACTORS WHEN DETERMINING COMPENSATION, INCLUDING PERFORMANCE AND COMPARABLE DATA.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 18</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 1023 AND FORM 990 ARE AVAILABLE FOR PUBLIC INSPECTION UPON REQUEST AT THE ORGANIZATION'S ADMINISTRATIVE OFFICE.</ExplanationTxt>
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      <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 ORGANIZATION'S ADMINISTRATIVE OFFICE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNREALIZED IMPAIRMENT ON REAL ESTATE -176,801. ROUNDING 1.</ExplanationTxt>
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  </ReturnData>
</Return>