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      <TotalProgramServiceRevenueAmt>32116</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>92957</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>92957</RelatedOrExemptFuncIncomeAmt>
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      <FundraisingDirectExpensesAmt>1761</FundraisingDirectExpensesAmt>
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        <ExclusionAmt>68195</ExclusionAmt>
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      <CostOfGoodsSoldAmt>9136</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>6781</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>6781</RelatedOrExemptFuncIncomeAmt>
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      <OtherRevenueMiscGrp>
        <Desc>CAPITAL GAINS INCOME</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>114855</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>114855</RelatedOrExemptFuncIncomeAmt>
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      <MiscellaneousRevenueGrp>
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        <RelatedOrExemptFuncIncomeAmt>11096</RelatedOrExemptFuncIncomeAmt>
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        <RelatedOrExemptFuncIncomeAmt>257805</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>68195</ExclusionAmt>
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      <OtherSalariesAndWagesGrp>
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        <ProgramServicesAmt>141207</ProgramServicesAmt>
        <ManagementAndGeneralAmt>47069</ManagementAndGeneralAmt>
        <FundraisingAmt>47069</FundraisingAmt>
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      <OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>17180</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5727</ManagementAndGeneralAmt>
        <FundraisingAmt>5726</FundraisingAmt>
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      <FeesForServicesAccountingGrp>
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        <ManagementAndGeneralAmt>10229</ManagementAndGeneralAmt>
      </FeesForServicesAccountingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
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        <ProgramServicesAmt>7329</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7329</ManagementAndGeneralAmt>
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        <TotalAmt>3753</TotalAmt>
        <ManagementAndGeneralAmt>3753</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>6366</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6366</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>11631</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2052</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>41</ManagementAndGeneralAmt>
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      <DepreciationDepletionGrp>
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        <ProgramServicesAmt>7523</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7523</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>15716</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>MAINTENANCE/GARBAGE, ET</Desc>
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        <ProgramServicesAmt>10874</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2718</ManagementAndGeneralAmt>
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      <OtherExpensesGrp>
        <Desc>PUBLIC PROGRAMS</Desc>
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        <ProgramServicesAmt>5806</ProgramServicesAmt>
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      <OtherExpensesGrp>
        <Desc>PROFESSIONAL DEVELOPMEN</Desc>
        <TotalAmt>4537</TotalAmt>
        <ProgramServicesAmt>4537</ProgramServicesAmt>
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      <AllOtherExpensesGrp>
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        <ProgramServicesAmt>14043</ProgramServicesAmt>
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        <ProgramServicesAmt>332971</ProgramServicesAmt>
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        <FundraisingAmt>52865</FundraisingAmt>
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        <EOYAmt>5402</EOYAmt>
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        <EOYAmt>9912</EOYAmt>
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        <EOYAmt>1873013</EOYAmt>
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        <EOYAmt>5037168</EOYAmt>
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        <EOYAmt>7448999</EOYAmt>
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        <EOYAmt>5484</EOYAmt>
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      <TotalLiabilitiesGrp>
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        <EOYAmt>5484</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
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        <EOYAmt>2190070</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
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        <EOYAmt>5253445</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
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        <EOYAmt>7443515</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>7448999</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>357774</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>419048</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>1</AccountantCompileOrReviewInd>
      <AcctCompileOrReviewBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </AcctCompileOrReviewBasisGrp>
      <FSAuditedInd>0</FSAuditedInd>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
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        <CurrentTaxYearMinus3YearsAmt>173326</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>277023</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>383233</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>516708</CurrentTaxYearAmt>
        <TotalAmt>1521722</TotalAmt>
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      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>171432</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>173326</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>277023</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>383233</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>516708</CurrentTaxYearAmt>
        <TotalAmt>1521722</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>125915</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>1395807</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>72205</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>94491</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>100482</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>114748</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>92680</CurrentTaxYearAmt>
        <TotalAmt>474606</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>10861</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>15115</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>14881</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>18968</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>11096</CurrentTaxYearAmt>
        <TotalAmt>70921</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>2067249</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>803311</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.67520</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.64470</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>SCHEDULE A, PART VI, LIST OF UNUSUAL GRANTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>DESCRIPTION: ONE TIME DATE: 07/01/16 AMOUNT: 3570000.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <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>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <CollUsedLoanOrExchProgInd>X</CollUsedLoanOrExchProgInd>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>4529373</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>623954</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>141574</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>14658</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>4997095</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>3886899</BeginningYearBalanceAmt>
        <ContributionsAmt>545046</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>757982</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>646136</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>14418</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>4529373</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>4188103</BeginningYearBalanceAmt>
        <ContributionsAmt>83062</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-199148</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>161427</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>23691</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>3886899</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>3929052</BeginningYearBalanceAmt>
        <ContributionsAmt>29450</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>603406</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>360000</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>14808</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>4187100</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>264526</BeginningYearBalanceAmt>
        <ContributionsAmt>3500000</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>250118</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>56519</OtherExpendituresAmt>
        <AdministrativeExpensesAmt>29073</AdministrativeExpensesAmt>
        <EndYearBalanceAmt>3929052</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>105789</OtherCostOrOtherBasisAmt>
        <BookValueAmt>105789</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
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        <DepreciationAmt>941712</DepreciationAmt>
        <BookValueAmt>1693080</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
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        <DepreciationAmt>19809</DepreciationAmt>
        <BookValueAmt>59390</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
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        <DepreciationAmt>183113</DepreciationAmt>
        <BookValueAmt>7145</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
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        <DepreciationAmt>16799</DepreciationAmt>
        <BookValueAmt>7609</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>1873013</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>EDWARD JONES</Desc>
        <BookValueAmt>273769</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>VANGUARD GRIGGS BURKE ENDOWMENT</Desc>
        <BookValueAmt>4134512</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>VANGUARD LIBRARY ENDOWMENT</Desc>
        <BookValueAmt>588814</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>CERTIFICATE OF DEPOSIT</Desc>
        <BookValueAmt>40073</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>5037168</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">
      <FundraisingEventInformationGrp>
        <Event1Nm>DINNER GALA</Event1Nm>
        <GrossReceiptsEvent1Amt>68995</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>68995</GrossRevenueEvent1Amt>
        <OtherDirectExpensesEvent1Amt>1178</OtherDirectExpensesEvent1Amt>
        <Event2Nm>GOLF OUTING</Event2Nm>
        <GrossReceiptsEvent2Amt>0</GrossReceiptsEvent2Amt>
        <OtherDirectExpensesEvent2Amt>471</OtherDirectExpensesEvent2Amt>
        <OtherEventsTotalCnt>5</OtherEventsTotalCnt>
        <GrossReceiptsOtherEventsAmt>961</GrossReceiptsOtherEventsAmt>
        <GrossRevenueOtherEventsAmt>961</GrossRevenueOtherEventsAmt>
        <OthDirectExpnssOtherEventsAmt>112</OthDirectExpnssOtherEventsAmt>
        <GrossReceiptsTotalAmt>69956</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>69956</GrossRevenueTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>1761</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>1761</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>68195</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </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 PAGE 2 PART III LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THERE WAS NO CHANGE TO THE ORGANIZATION'S OVERSIGHT PROCESS DURING THE TAX YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
