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        <ManagementAndGeneralAmt>9591</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>848</ManagementAndGeneralAmt>
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      <OtherExpensesGrp>
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      <OtherExpensesGrp>
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        <ManagementAndGeneralAmt>7351</ManagementAndGeneralAmt>
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      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>1</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>1</AuditCommitteeInd>
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        <CurrentTaxYearMinus3YearsAmt>246306</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>230359</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>3741432</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>173326</CurrentTaxYearAmt>
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      <GrossReceiptsAdmissionsGrp>
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        <CurrentTaxYearMinus3YearsAmt>155641</CurrentTaxYearMinus3YearsAmt>
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        <CurrentTaxYearMinus1YearAmt>178179</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>168688</CurrentTaxYearAmt>
        <TotalAmt>782000</TotalAmt>
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        <CurrentTaxYearAmt>342014</CurrentTaxYearAmt>
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      <AmountsRcvdDsqlfyPersonGrp>
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        <CurrentTaxYearMinus1YearAmt>250139</CurrentTaxYearMinus1YearAmt>
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      <InvestmentIncomeAndUBTIGrp>
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        <CurrentTaxYearMinus1YearAmt>10861</CurrentTaxYearMinus1YearAmt>
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        <CurrentTaxYearMinus2YearsAmt>390504</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>4180611</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>960594</CurrentTaxYearAmt>
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      <PublicSupportPY509Pct>0.94230</PublicSupportPY509Pct>
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      <InvestmentIncomePYPct>0.05030</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>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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    <IRS990ScheduleD documentId="RetDoc1040000001">
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      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <CollUsedLoanOrExchProgInd>X</CollUsedLoanOrExchProgInd>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
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        <EndYearBalanceAmt>4187100</EndYearBalanceAmt>
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      <CYMinus1YrEndwmtFundGrp>
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        <AdministrativeExpensesAmt>29073</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>3929052</EndYearBalanceAmt>
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        <EndYearBalanceAmt>264526</EndYearBalanceAmt>
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      <CYMinus3YrEndwmtFundGrp>
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        <MethodValuationCd>F</MethodValuationCd>
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      <OtherSecuritiesGrp>
        <Desc>VANGUARD GRIGGS BURKE ENDOWMENT</Desc>
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        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>VANGUARD LIBRARY ENDOWMENT</Desc>
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        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>4176783</TotalBookValueSecuritiesAmt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>IN-HOUSE COLLECTIONS INCLUDE TAXIDERMIC MOUNTS OF BIRDS AND MAMMALS; PRESERVED, DRIED, AND TAXIDERMIED FISH, REPTILES, AND AMPHIBIANS; ANIMAL SKULLS AND SKINS; MOUNTED AND PERSERVED INSECTS; A HERBARIUM FEATURE VASCULAR PLANTS, SEEDS, MOSSES, LIVERWORTS, AND LICHENS; ROCKS AND MINERALS; PLASTER CASTS OF ANIMAL TRACKS; BIRD NESTS; AND MORE. THE COLLECTIONS REPRESENT THE NATURAL HISTORY AND BIOLOGICAL DIVERSITY OF THE WESTERN AND UPPER GREAT LAKES REGION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>DISBURSE AN AMOUNT (EXPECTED TO BE BETWEEN 3.5-4.5%) ANNUALLY, BASED ON THE 3 YEAR SMOOTHED SEPTEMBER 30 MARKET VALUE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041300001">
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        <Event1Nm>DINNER GALA</Event1Nm>
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        <Event2Nm>FORCE FOR NATURE</Event2Nm>
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        <OtherEventsTotalCnt>5</OtherEventsTotalCnt>
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        <GrossRevenueOtherEventsAmt>12575</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>1239</OthDirectExpnssOtherEventsAmt>
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        <GrossRevenueTotalEventsAmt>102219</GrossRevenueTotalEventsAmt>
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        <DirectExpenseSummaryEventsAmt>16414</DirectExpenseSummaryEventsAmt>
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    </IRS990ScheduleG>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MEMBERS OF THE ORGANIZATION ARE INDIVIDUALS OR BUSINESS THAT SIGN UP AS MEMBERS ONCE A YEAR BY PAYING A MEMBERSHIP FEE</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>THE OFFICERS ARE GIVEN A COPY OF THE FORM 990 IN WHICH THEY LOOK OVER, APPROVE, &amp; SIGN AND SEND IN THE FORM 990 TO THE GOVERNING AGENCIES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION RECEIVES THE REQUEST AND THEN PROVIDES A COPY OF THE FORMS FOR THE REQUESTOR TO INSPECT. COPIES OF THE FORM 990 CAN ALSO BE PRINTED FROM THE GUIDESTAR WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XI, line 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>FEDERAL/BOOK DEPN DIFF 709. ROUNDING 1.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part XII, Line 2c:</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE WAS NO CHANGE TO THE ORGANIZATION'S OVERSIGHT PROCESS DURING THE TAX YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>