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      <ConferencesMeetingsGrp>
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        <Desc>Dues &amp; Subscriptions</Desc>
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      <OtherExpensesGrp>
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        <EOYAmt>41279390</EOYAmt>
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        <EOYAmt>158980</EOYAmt>
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      <MortgNotesPyblScrdInvstPropGrp>
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        <EOYAmt>2783000</EOYAmt>
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      <TotalLiabilitiesGrp>
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        <EOYAmt>2941980</EOYAmt>
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      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
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        <EOYAmt>33073931</EOYAmt>
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      <TemporarilyRstrNetAssetsGrp>
        <BOYAmt>3013807</BOYAmt>
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      <PermanentlyRstrNetAssetsGrp>
        <BOYAmt>1779145</BOYAmt>
        <EOYAmt>2130860</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>36009040</BOYAmt>
        <EOYAmt>38337410</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>41279390</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>2328370</ReconcilationRevenueExpnssAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="00000002" softwareId="15000272">
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      <GiftsGrantsContriRcvd170Grp>
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        <CurrentTaxYearMinus3YearsAmt>6871515</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>3999159</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3218791</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>4577072</CurrentTaxYearAmt>
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        <CurrentTaxYearMinus1YearAmt>3218791</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>4577072</CurrentTaxYearAmt>
        <TotalAmt>20300108</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>4668296</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>15631812</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
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        <CurrentTaxYearMinus3YearsAmt>176794</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>175576</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>226291</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>248000</CurrentTaxYearAmt>
        <TotalAmt>1040677</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>21340785</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>164613</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.73250</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.64880</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
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    <IRS990ScheduleB documentId="00000003">
      <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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      <ProtectionNaturalHabitatInd>X</ProtectionNaturalHabitatInd>
      <PreservationOpenSpaceInd>X</PreservationOpenSpaceInd>
      <HistoricLandAreaInd>X</HistoricLandAreaInd>
      <TotalEasementsCnt>226</TotalEasementsCnt>
      <TotalAcreageCnt>13564.0</TotalAcreageCnt>
      <HistoricStructureEasementsCnt>0</HistoricStructureEasementsCnt>
      <ModifiedEasementsCnt>0</ModifiedEasementsCnt>
      <StatesEasementsHeldCnt>1</StatesEasementsHeldCnt>
      <WrittenPolicyMonitoringInd>true</WrittenPolicyMonitoringInd>
      <StaffHoursSpentEnforcementCnt>1864</StaffHoursSpentEnforcementCnt>
      <ExpensesIncurredEnforcementAmt>84020</ExpensesIncurredEnforcementAmt>
      <Section170hRqrStsfdInd>true</Section170hRqrStsfdInd>
      <CYEndwmtFundGrp>
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        <ContributionsAmt>401715</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>186400</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>131295</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>19260</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>3927684</EndYearBalanceAmt>
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        <AdministrativeExpensesAmt>16511</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>3490124</EndYearBalanceAmt>
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        <BookValueAmt>33068087</BookValueAmt>
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      <BuildingsGrp>
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        <BookValueAmt>625832</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
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        <BookValueAmt>46239</BookValueAmt>
      </EquipmentGrp>
      <TotalBookValueLandBuildingsAmt>33740158</TotalBookValueLandBuildingsAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt II, Line 9</FormAndLineReferenceDesc>
        <ExplanationTxt>Cons. easements are not valued on income statement or balance sheet. Purchased conservation easements are expensed. Conservation easements are valued at 'zero dollar value' in the Trust financial records as they carry no rights of affirmative use or access except for monitoring purposes, and constitute an obligation of the Trust to maintain and defend them.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt II, Line 5</FormAndLineReferenceDesc>
        <ExplanationTxt>Monitoring and enforcement of conservation easements is a primary mission of the Trust.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt V, Line 4</FormAndLineReferenceDesc>
        <ExplanationTxt>Earnings from general endowment- available for general use. Earnings and/or principal from special endowment 1 available only for land-specific stewardship needs. Earnings from special endowments 2,3, &amp; 4 are available for land-specific stewardship needs.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleM documentId="00000005">
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        <ContributionCnt>21</ContributionCnt>
        <NoncashContributionsRptF990Amt>791126</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>Hi-Lo average</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <RealEstateOtherGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <NoncashContributionsRptF990Amt>363600</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>appraisal</MethodOfDeterminingRevenuesTxt>
      </RealEstateOtherGrp>
      <Form8283ReceivedCnt>4</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>true</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt I Line 33</FormAndLineReferenceDesc>
        <ExplanationTxt>All conservation easements are recorded at 'zero' book value. [Part I, Line 14]</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="00000006" softwareId="15000272">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>After review by Executive Director and Treasurer,full Board of Trustees is given copy of Form 990 for their review before the return is submitted.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Conflict of Interest policy is distributed to all new trustees. Disclosure updates are required annually. Trustees with potential conflicts of interest on specific project decisions do not participate in decisions on that project.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>Following a review of comparables and input from the Board of Trustees, the Board Executive committee recommends changes to the Executive Director's compensation package to the full Board. This recommendation then requires approval by the full Board.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Pt VI, Line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Governing documents and financial statements are available upon request from main Trust office.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part II, Line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>Pledges Receivable - Net</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part II, Line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>Grants Receivable - Net</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part II, Line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>Prepaids</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part II, Line 24</FormAndLineReferenceDesc>
        <ExplanationTxt>Investments</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990EZ, Part II, Line 26</FormAndLineReferenceDesc>
        <ExplanationTxt>Accounts Payable &amp; Accrued Expenses</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>