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        <CityNm>MINOT</CityNm>
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        <BusinessNameLine1Txt>THREE AFFILIATED TRIBES MUSEUM INC</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>THRE</BusinessNameControlTxt>
      <USAddress>
        <AddressLine1Txt>PO BOX 147</AddressLine1Txt>
        <CityNm>NEW TOWN</CityNm>
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      <PreparerPersonNm>David Hance</PreparerPersonNm>
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    </PreparerPersonGrp>
    <TaxYr>2023</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
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        <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
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        <SavAndTempCashInvstEOYAmt>4776076</SavAndTempCashInvstEOYAmt>
        <SavAndTempCashInvstEOYFMVAmt>4776076</SavAndTempCashInvstEOYFMVAmt>
        <LandBldgEquipCostOrOtherBssAmt>659423</LandBldgEquipCostOrOtherBssAmt>
        <LandBOYAmt>659423</LandBOYAmt>
        <LandEOYAmt referenceDocumentId="STM119">659423</LandEOYAmt>
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        <OtherAssetsEOYAmt>35098</OtherAssetsEOYAmt>
        <OtherAssetsEOYFMVAmt referenceDocumentId="STM120">35098</OtherAssetsEOYFMVAmt>
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        <TotalAssetsEOYAmt>6119052</TotalAssetsEOYAmt>
        <TotalAssetsEOYFMVAmt>6119052</TotalAssetsEOYFMVAmt>
        <OtherLiabilitiesEOYAmt referenceDocumentId="STM121">1107</OtherLiabilitiesEOYAmt>
        <TotalLiabilitiesBOYAmt>0</TotalLiabilitiesBOYAmt>
        <TotalLiabilitiesEOYAmt>1107</TotalLiabilitiesEOYAmt>
        <OrgDoesNotFollowFASB117Ind>X</OrgDoesNotFollowFASB117Ind>
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        <AdditionalPaidInCapitalBOYAmt>175000</AdditionalPaidInCapitalBOYAmt>
        <AdditionalPaidInCapitalEOYAmt>175000</AdditionalPaidInCapitalEOYAmt>
        <RetainedEarningBOYAmt>526251</RetainedEarningBOYAmt>
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        <TotalLiabilitiesNetAstEOYAmt>6119052</TotalLiabilitiesNetAstEOYAmt>
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      <ChgInNetAssetsFundBalancesGrp>
        <TotNetAstOrFundBalancesBOYAmt>6107454</TotNetAstOrFundBalancesBOYAmt>
        <ExcessRevenueOverExpensesAmt>13048</ExcessRevenueOverExpensesAmt>
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      <ExciseTaxBasedOnInvstIncmGrp>
        <InvestmentIncomeExciseTaxAmt>2395</InvestmentIncomeExciseTaxAmt>
        <TaxUnderSection511Amt>0</TaxUnderSection511Amt>
        <SubtotalAmt>2395</SubtotalAmt>
        <SubtitleATaxAmt>0</SubtitleATaxAmt>
        <TaxBasedOnInvestmentIncomeAmt>2395</TaxBasedOnInvestmentIncomeAmt>
        <TaxDueAmt>2395</TaxDueAmt>
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        <Form1120POLFiledInd>false</Form1120POLFiledInd>
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        <PrivateOperatingFoundationInd>true</PrivateOperatingFoundationInd>
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        <OwnControlledEntityInd>false</OwnControlledEntityInd>
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        <ComplyWithPublicInspRqrInd>true</ComplyWithPublicInspRqrInd>
        <IndividualWithBooksNm>RAMONA TWO SHIELDS</IndividualWithBooksNm>
        <PhoneNum>7018981473</PhoneNum>
        <LocationOfBooksUSAddress>
          <AddressLine1Txt>107 1ST ST NW</AddressLine1Txt>
          <CityNm>PARSHALL</CityNm>
          <StateAbbreviationCd>ND</StateAbbreviationCd>
          <ZIPCd>58770</ZIPCd>
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        <PayCompDisqualifiedPrsnInd>false</PayCompDisqualifiedPrsnInd>
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        <PaymentToGovernmentOfficialInd>false</PaymentToGovernmentOfficialInd>
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        <UndistributedIncomePYInd>false</UndistributedIncomePYInd>
        <BusinessHoldingsInd>false</BusinessHoldingsInd>
        <JeopardyInvestmentsInd>false</JeopardyInvestmentsInd>
        <UncorrectedPYJeopardyInvstInd>false</UncorrectedPYJeopardyInvstInd>
        <InfluenceLegislationInd>false</InfluenceLegislationInd>
        <InfluenceElectionInd>false</InfluenceElectionInd>
        <GrantsToIndividualsInd>false</GrantsToIndividualsInd>
        <GrantsToOrganizationsInd>false</GrantsToOrganizationsInd>
        <NoncharitablePurposeInd>false</NoncharitablePurposeInd>
        <RcvFndsToPayPrsnlBnftCntrctInd>false</RcvFndsToPayPrsnlBnftCntrctInd>
        <PayPremiumsPrsnlBnftCntrctInd>false</PayPremiumsPrsnlBnftCntrctInd>
        <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
        <SubjToTaxRmnrtnExPrchtPymtInd>false</SubjToTaxRmnrtnExPrchtPymtInd>
      </StatementsRegardingActy4720Grp>
      <OfficerDirTrstKeyEmplInfoGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>NOREEN TWO CROW</PersonNm>
          <USAddress>
            <AddressLine1Txt>PO BOX 225</AddressLine1Txt>
            <CityNm>PARSHALL</CityNm>
            <StateAbbreviationCd>ND</StateAbbreviationCd>
            <ZIPCd>58770</ZIPCd>
          </USAddress>
          <TitleTxt>SECRETARY</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>RAMONA TWO SHIELDS</PersonNm>
          <USAddress>
            <AddressLine1Txt>107 1ST ST NW</AddressLine1Txt>
            <CityNm>PARSHALL</CityNm>
            <StateAbbreviationCd>ND</StateAbbreviationCd>
            <ZIPCd>58770</ZIPCd>
          </USAddress>
          <TitleTxt>TREAS</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>15.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>GLORIA FAST DOG</PersonNm>
          <USAddress>
            <AddressLine1Txt>PO BOX 562</AddressLine1Txt>
            <CityNm>NEW TOWN</CityNm>
            <StateAbbreviationCd>ND</StateAbbreviationCd>
            <ZIPCd>587630562</ZIPCd>
          </USAddress>
          <TitleTxt>PRESIDENT</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>0.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <OfficerDirTrstKeyEmplGrp>
          <PersonNm>GARY TWO CROW</PersonNm>
          <USAddress>
            <AddressLine1Txt>1047 63RD AVE NW</AddressLine1Txt>
            <CityNm>GARRISON</CityNm>
            <StateAbbreviationCd>ND</StateAbbreviationCd>
            <ZIPCd>58540</ZIPCd>
          </USAddress>
          <TitleTxt>VICE PRESIDENT</TitleTxt>
          <AverageHrsPerWkDevotedToPosRt>15.00</AverageHrsPerWkDevotedToPosRt>
          <CompensationAmt>0</CompensationAmt>
          <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
          <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
        </OfficerDirTrstKeyEmplGrp>
        <CompOfHghstPdEmplOrNONETxt>NONE</CompOfHghstPdEmplOrNONETxt>
        <OtherEmployeePaidOver50kCnt>0</OtherEmployeePaidOver50kCnt>
        <CompOfHghstPdCntrctOrNONETxt>NONE</CompOfHghstPdCntrctOrNONETxt>
      </OfficerDirTrstKeyEmplInfoGrp>
      <SummaryOfDirectChrtblActyGrp>
        <Description1Txt>MAINTAINS MUSEUM HOUSING EXHIBITS RELATING TO THE THREE AFFILIATED TRIBES</Description1Txt>
        <Expenses1Amt>11869</Expenses1Amt>
        <Description2Txt>MAINTAINS REFERENCE LIBRARY OF THREE AFFILIATED TRIBES HISTORY</Description2Txt>
        <Expenses2Amt>111</Expenses2Amt>
        <Description3Txt>PRESENTED PROGRAMS OF HISTORICAL INFORMATION AND ART TO SCHOOL GROUPS AND ADULTS</Description3Txt>
        <Expenses3Amt>1475</Expenses3Amt>
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        <TotalAmt>177221</TotalAmt>
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        <AverageMonthlyCashBalancesAmt>5424531</AverageMonthlyCashBalancesAmt>
        <FMVAllOtherNoncharitableAstAmt>40000</FMVAllOtherNoncharitableAstAmt>
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        <AcquisitionIndebtednessAmt>0</AcquisitionIndebtednessAmt>
        <AdjustedTotalFMVOfUnusedAstAmt>5464531</AdjustedTotalFMVOfUnusedAstAmt>
        <CashDeemedCharitableAmt>81968</CashDeemedCharitableAmt>
        <NetVlNoncharitableAssetsAmt>5382563</NetVlNoncharitableAssetsAmt>
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        <MinimumInvestmentReturnAmt>269128</MinimumInvestmentReturnAmt>
        <TaxBasedOnInvestmentIncomeAmt>2395</TaxBasedOnInvestmentIncomeAmt>
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        <DistributableBeforeDedAmt>266733</DistributableBeforeDedAmt>
        <DistributableAsAdjustedAmt>266733</DistributableAsAdjustedAmt>
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        <ProgramRelatedInvstTotalAmt>177221</ProgramRelatedInvstTotalAmt>
        <QualifyingDistributionsAmt>311339</QualifyingDistributionsAmt>
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        <DistributableAsAdjustedAmt>266733</DistributableAsAdjustedAmt>
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        <QualifyingDistributionsAmt>311339</QualifyingDistributionsAmt>
        <AppliedToCurrentYearAmt>266733</AppliedToCurrentYearAmt>
        <RemainingDistriFromCorpusAmt>44606</RemainingDistriFromCorpusAmt>
        <TotalCorpusAmt>4967720</TotalCorpusAmt>
        <UndistributedIncomeCYAmt>0</UndistributedIncomeCYAmt>
        <ExcessDistriCyovToNextYrAmt>4967720</ExcessDistriCyovToNextYrAmt>
        <ExcessFromYear3Amt>4923114</ExcessFromYear3Amt>
        <ExcessFromCurrentYearAmt>44606</ExcessFromCurrentYearAmt>
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      <PrivateOperatingFoundationsGrp>
        <Section4942j5Ind>X</Section4942j5Ind>
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          <TotalAmt>0</TotalAmt>
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          <Year1Amt>231973</Year1Amt>
          <Year2Amt>234604</Year2Amt>
          <Year3Amt>65911</Year3Amt>
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          <Year1Amt>179091</Year1Amt>
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          <Year3Amt>182587</Year3Amt>
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        <ShareholderManagerNm>NONE</ShareholderManagerNm>
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          <LineNumberTxt>11A</LineNumberTxt>
          <RelationshipStatementTxt>FUNDS ARE USED TO MAINTAIN MUSEUM</RelationshipStatementTxt>
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      </RlnOfActyToAccomOfExmptPrpsGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>false</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>false</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>false</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>false</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>false</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>false</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>false</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>false</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>false</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>false</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <AllOthProgRltdInvestmentsSch documentId="STM142">
      <AllOtherProgramRelatedInvstGrp>
        <Desc>HELEN GUGH AND TILLIE WALKER BEQUESTED THEIR INTEREST IN OIL WELLS. OIL ROYALTIES AND INTEREST INCOME ARE THE MAIN SOURCE OF REVENUE FOR THE MUSEUM.</Desc>
        <Amt>177221</Amt>
      </AllOtherProgramRelatedInvstGrp>
    </AllOthProgRltdInvestmentsSch>
    <LandEtcSchedule2 documentId="STM119">
      <LandEtcGrp>
        <CategoryOrItemTxt>LAND BUILDINGS EQUIP</CategoryOrItemTxt>
        <CostOrOtherBasisAmt>582715</CostOrOtherBasisAmt>
        <AccumulatedDepreciationAmt>0</AccumulatedDepreciationAmt>
        <BookValueAmt>582715</BookValueAmt>
        <EOYFMVAmt>582715</EOYFMVAmt>
      </LandEtcGrp>
      <LandEtcGrp>
        <CategoryOrItemTxt>PLANNING FOR MUSEUM EXPANSION</CategoryOrItemTxt>
        <CostOrOtherBasisAmt>76708</CostOrOtherBasisAmt>
        <AccumulatedDepreciationAmt>0</AccumulatedDepreciationAmt>
        <BookValueAmt>76708</BookValueAmt>
        <EOYFMVAmt>76708</EOYFMVAmt>
      </LandEtcGrp>
    </LandEtcSchedule2>
    <OtherAssetsSchedule documentId="STM120">
      <OtherAssetsScheduleGrp>
        <Desc>TWO OIL WELLS</Desc>
        <BOYBookValueAmt>40000</BOYBookValueAmt>
        <EOYBookValueAmt>40000</EOYBookValueAmt>
        <EOYFMVAmt>40000</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>PREPAID 990PF TAX</Desc>
        <BOYBookValueAmt>1829</BOYBookValueAmt>
        <EOYBookValueAmt>0</EOYBookValueAmt>
        <EOYFMVAmt>0</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>DEPLETION</Desc>
        <BOYBookValueAmt>0</BOYBookValueAmt>
        <EOYBookValueAmt>-4902</EOYBookValueAmt>
        <EOYFMVAmt>-4902</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
    </OtherAssetsSchedule>
    <OtherDecreasesSchedule documentId="STM116">
      <OtherDecreasesDetail>
        <Desc>CORRECTION FOR PREPAID TAX ASSET</Desc>
        <Amt>1829</Amt>
      </OtherDecreasesDetail>
      <OtherDecreasesDetail>
        <Desc>CORRECTION FOR PREPAID PAYROLL</Desc>
        <Amt>728</Amt>
      </OtherDecreasesDetail>
    </OtherDecreasesSchedule>
    <OtherExpensesSchedule documentId="STM103">
      <OtherExpensesScheduleGrp>
        <Desc>PROFESSIONAL FEES</Desc>
        <RevenueAndExpensesPerBooksAmt>4120</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>4120</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>4120</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>SUPPLIES</Desc>
        <RevenueAndExpensesPerBooksAmt>1581</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>1581</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1581</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>OFFICE SUPPLIES POSTAGE</Desc>
        <RevenueAndExpensesPerBooksAmt>1582</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>1582</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>1582</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>REPAIRS AND MAINTENANCE</Desc>
        <RevenueAndExpensesPerBooksAmt>111</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>111</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>111</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>POSTAGE</Desc>
        <RevenueAndExpensesPerBooksAmt>216</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>216</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>216</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>LICENSES &amp; PERMITS</Desc>
        <RevenueAndExpensesPerBooksAmt>10</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>10</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>10</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>BOARD MEMBERS</Desc>
        <RevenueAndExpensesPerBooksAmt>45000</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>45000</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>45000</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="STM106">
      <OtherIncomeDetail>
        <Desc>OIL ROYALTIES</Desc>
        <RevenueAndExpensesPerBooksAmt>32677</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>32677</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
      </OtherIncomeDetail>
      <OtherIncomeDetail>
        <Desc>ADMISSIONS</Desc>
        <RevenueAndExpensesPerBooksAmt>0</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
    <OtherLiabilitiesSchedule documentId="STM121">
      <OtherLiabilitiesDetail>
        <Desc>PAYROLL LIABILITIES</Desc>
        <BOYBookValueAmt>0</BOYBookValueAmt>
        <EOYBookValueAmt>1107</EOYBookValueAmt>
      </OtherLiabilitiesDetail>
    </OtherLiabilitiesSchedule>
    <TaxesSchedule documentId="STM110">
      <TaxesDetail>
        <CategoryTxt>PAYROLL &amp; 990 TAXES</CategoryTxt>
        <Amt>7846</Amt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>7846</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>7846</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>