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        <DividendsAndInterestFromSecDtl>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>186</ExclusionAmt>
        </DividendsAndInterestFromSecDtl>
        <OtherInvestmentIncomeGrp>
          <ExclusionCd>15</ExclusionCd>
          <ExclusionAmt>64127566</ExclusionAmt>
        </OtherInvestmentIncomeGrp>
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>34222</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionAmt>67786237</ExclusionAmt>
          <RelatedOrExemptFunctionIncmAmt>0</RelatedOrExemptFunctionIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>67820459</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <TrnsfrTransRlnNonchrtblEOGrp>
        <TrnsfrOfCashToNonchrtblEOInd>0</TrnsfrOfCashToNonchrtblEOInd>
        <TrnsfrOtherAssetNonchrtblEOInd>0</TrnsfrOtherAssetNonchrtblEOInd>
        <SalesOrExchangesOfAssetsInd>0</SalesOrExchangesOfAssetsInd>
        <PurchaseOfAssetsNonchrtblEOInd>0</PurchaseOfAssetsNonchrtblEOInd>
        <RentalOfFacilitiesOthAssetsInd>0</RentalOfFacilitiesOthAssetsInd>
        <ReimbursementArrangementsInd>0</ReimbursementArrangementsInd>
        <LoansOrLoanGuaranteesInd>0</LoansOrLoanGuaranteesInd>
        <PerformanceOfServicesEtcInd>0</PerformanceOfServicesEtcInd>
        <SharingOfFacilitiesEtcInd>0</SharingOfFacilitiesEtcInd>
        <RelationshipsNonchrtblEOInd>0</RelationshipsNonchrtblEOInd>
      </TrnsfrTransRlnNonchrtblEOGrp>
    </IRS990PF>
    <GeneralExplanationAttachment documentId="RetDoc2258700001">
      <GeneralExplanationGrp>
        <FormAndLineReferenceDesc>Part XII</FormAndLineReferenceDesc>
        <MediumExplanationTxt>The Philecology Foundation received a disposition of assets from a terminated foundation, Bass Foundation EIN 75-6033983.As a result of a transfer of assets as described in section 507(b)(2), the successor foundation is treated as possessing those attributes and characteristics of the transferor which are described in Treasury Regulation 1.507-3(a)(2), (3), and (4).The amounts reported as Excess distribution carryover in Part XII include amounts received from Bass Foundation at December 27, 2022.</MediumExplanationTxt>
      </GeneralExplanationGrp>
    </GeneralExplanationAttachment>
    <InvestmentsCorpStockSchedule documentId="RetDoc2018900001">
      <InvestmentsCorporateStockGrp>
        <StockNm>Investments in Stock</StockNm>
        <EOYBookValueAmt>107480</EOYBookValueAmt>
        <EOYFMVAmt>151419</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <LegalFeesSchedule documentId="RetDoc2002100001">
      <LegalFeesGrp>
        <CategoryTxt>LEGAL FEES</CategoryTxt>
        <LegalFeesAmt>64875</LegalFeesAmt>
        <NetInvestmentIncomeAmt>64875</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </LegalFeesGrp>
    </LegalFeesSchedule>
    <OtherAssetsSchedule documentId="RetDoc2046600001">
      <OtherAssetsScheduleGrp>
        <Desc>Leasehold - A/D</Desc>
        <BOYBookValueAmt>-1216832</BOYBookValueAmt>
        <EOYBookValueAmt>-1350762</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Leasehold Cost- Depletable Assets</Desc>
        <BOYBookValueAmt>1478378</BOYBookValueAmt>
        <EOYBookValueAmt>1517433</EOYBookValueAmt>
        <EOYFMVAmt>340000000</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Non-producing Lease Cost</Desc>
        <BOYBookValueAmt>25767</BOYBookValueAmt>
        <EOYBookValueAmt>25</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Non-producing Royalty</Desc>
        <BOYBookValueAmt>114767</BOYBookValueAmt>
        <EOYBookValueAmt>101453</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Royalty Accum-Nonproducing</Desc>
        <BOYBookValueAmt>-110529</BOYBookValueAmt>
        <EOYBookValueAmt>-97215</EOYBookValueAmt>
      </OtherAssetsScheduleGrp>
      <OtherAssetsScheduleGrp>
        <Desc>Excise Tax Receivable</Desc>
        <BOYBookValueAmt>48495</BOYBookValueAmt>
        <EOYBookValueAmt>150676</EOYBookValueAmt>
        <EOYFMVAmt>150676</EOYFMVAmt>
      </OtherAssetsScheduleGrp>
    </OtherAssetsSchedule>
    <OtherDecreasesSchedule documentId="RetDoc2049800001">
      <OtherDecreasesDetail>
        <Desc>Non-Deductible Expenses</Desc>
        <Amt>10233</Amt>
      </OtherDecreasesDetail>
    </OtherDecreasesSchedule>
    <OtherExpensesSchedule documentId="RetDoc2003200001">
      <OtherExpensesScheduleGrp>
        <Desc>Forgiven Interest Expense</Desc>
        <RevenueAndExpensesPerBooksAmt>582312</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
      <OtherExpensesScheduleGrp>
        <Desc>Bank Fees</Desc>
        <RevenueAndExpensesPerBooksAmt>60519</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>60519</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="RetDoc2001500001">
      <OtherIncomeDetail>
        <Desc>Royalty income</Desc>
        <RevenueAndExpensesPerBooksAmt>64127566</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>64127566</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
    <OtherIncreasesSchedule documentId="RetDoc2049700001">
      <OtherIncreasesDetail>
        <Desc>Net Distributions From Terminated Nonprofit Corporation</Desc>
        <Amt>12656</Amt>
      </OtherIncreasesDetail>
    </OtherIncreasesSchedule>
    <TaxesSchedule documentId="RetDoc2002500001">
      <TaxesDetail>
        <CategoryTxt>EXCISE TAX</CategoryTxt>
        <Amt>943571</Amt>
        <NetInvestmentIncomeAmt>0</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>STATE INCOME TAX</CategoryTxt>
        <Amt>43</Amt>
        <NetInvestmentIncomeAmt>43</NetInvestmentIncomeAmt>
        <AdjustedNetIncomeAmt>0</AdjustedNetIncomeAmt>
        <DisbursementsCharitablePrpsAmt>0</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>
