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        <ContributingManagerNm>CYNTHIA N GAYDEN</ContributingManagerNm>
        <ShareholderManagerNm>NONE</ShareholderManagerNm>
        <OnlyContriToPreselectedInd>X</OnlyContriToPreselectedInd>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>SEE ATTACHMENT 16</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>13727 NOEL ROAD</AddressLine1Txt>
            <AddressLine2Txt>SUITE 1200</AddressLine2Txt>
            <CityNm>DALLAS</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>75240</ZIPCd>
          </RecipientUSAddress>
          <GrantOrContributionPurposeTxt>SEE ATTACHMENT 16</GrantOrContributionPurposeTxt>
          <Amt>4139000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>4139000</TotalGrantOrContriPdDurYrAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <FeesContractsFromGovtAgGrp />
        <MembershipDuesAndAssmntGrp />
        <IntOnSavAndTempCashInvstGrp>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>166</ExclusionAmt>
        </IntOnSavAndTempCashInvstGrp>
        <DividendsAndInterestFromSecDtl>
          <ExclusionCd>14</ExclusionCd>
          <ExclusionAmt>1419285</ExclusionAmt>
        </DividendsAndInterestFromSecDtl>
        <NetRntlIncmReDebtFincdPropGrp />
        <NetRntlIncmReNotDebtFincdProp />
        <NetRentalIncomePersonalPropGrp />
        <OtherInvestmentIncomeGrp />
        <GainSalesAstOthThanInvntryGrp>
          <ExclusionCd>18</ExclusionCd>
          <ExclusionAmt>6625637</ExclusionAmt>
        </GainSalesAstOthThanInvntryGrp>
        <NetIncomeLossFromSpecialEvtGrp />
        <GrossProfitLossSlsOfInvntryGrp />
        <OtherRevenueDescribedGrp>
          <Desc>PARTNERSHIP INCOME</Desc>
          <BusinessCd>523000</BusinessCd>
          <UnrelatedBusinessTaxblIncmAmt>7684</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionCd>18</ExclusionCd>
          <ExclusionAmt>3909172</ExclusionAmt>
        </OtherRevenueDescribedGrp>
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>7684</UnrelatedBusinessTaxblIncmAmt>
          <ExclusionAmt>11954260</ExclusionAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>11961944</TotalIncomeProducingActyAmt>
      </AnalysisIncomeProducingActyGrp>
      <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>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <Organization501c3ExemptPFInd>X</Organization501c3ExemptPFInd>
      <GeneralRuleInd>X</GeneralRuleInd>
      <ContributorInformationGrp>
        <ContributorNum>1</ContributorNum>
        <ContributorPersonNm>MR MRS WILLIAM K GAYDEN</ContributorPersonNm>
        <ContributorUSAddress>
          <AddressLine1Txt>13727 NOEL ROAD STE 1200</AddressLine1Txt>
          <CityNm>DALLAS</CityNm>
          <StateAbbreviationCd>TX</StateAbbreviationCd>
          <ZIPCd>75240</ZIPCd>
        </ContributorUSAddress>
        <TotalContributionsAmt>8365103</TotalContributionsAmt>
        <PersonContributionInd>X</PersonContributionInd>
        <NoncashContributionInd>X</NoncashContributionInd>
      </ContributorInformationGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>16,000 Shares Varien Medical Systems</NoncashPropertyDesc>
        <FairMarketValueAmt>2812160</FairMarketValueAmt>
        <ReceivedDt>2021-01-21</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>2,000 Shares Idexx Laboratories, Inc.</NoncashPropertyDesc>
        <FairMarketValueAmt>1081130</FairMarketValueAmt>
        <ReceivedDt>2021-02-22</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>1,000 Shares Idexx Laboratories, Inc.</NoncashPropertyDesc>
        <FairMarketValueAmt>662775</FairMarketValueAmt>
        <ReceivedDt>2021-07-07</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>6,000 Shares Ecolab, Inc.</NoncashPropertyDesc>
        <FairMarketValueAmt>1307280</FairMarketValueAmt>
        <ReceivedDt>2021-08-04</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>600 Shares Mettler-Toledo International</NoncashPropertyDesc>
        <FairMarketValueAmt>924483</FairMarketValueAmt>
        <ReceivedDt>2021-08-25</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>6,000 Shares Johnson &amp; Johnson</NoncashPropertyDesc>
        <FairMarketValueAmt>980910</FairMarketValueAmt>
        <ReceivedDt>2021-11-16</ReceivedDt>
      </NonCashPropertyContributionGrp>
      <NonCashPropertyContributionGrp>
        <ContributorNum>1</ContributorNum>
        <NoncashPropertyDesc>200 Shares Alphabet</NoncashPropertyDesc>
        <FairMarketValueAmt>596365</FairMarketValueAmt>
        <ReceivedDt>2021-11-16</ReceivedDt>
      </NonCashPropertyContributionGrp>
    </IRS990ScheduleB>
    <AccountingFeesSchedule documentId="AccountingFeesSch">
      <AccountingFeesDetail>
        <CategoryTxt>TAX PREPARATION FEES</CategoryTxt>
        <Amt>9794</Amt>
        <NetInvestmentIncomeAmt>4897</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>4897</DisbursementsCharitablePrpsAmt>
      </AccountingFeesDetail>
    </AccountingFeesSchedule>
    <AllOthProgRltdInvestmentsSch documentId="AllOthProgInvSch">
      <AllOtherProgramRelatedInvstGrp>
        <Desc>NONE</Desc>
      </AllOtherProgramRelatedInvstGrp>
    </AllOthProgRltdInvestmentsSch>
    <DepreciationSchedule documentId="DepreciationSch" />
    <InvestmentsCorpBondsSchedule documentId="InvestCorpBondsSch">
      <InvestmentsCorporateBondsGrp>
        <BondNm>AMAZON.COM INC</BondNm>
      </InvestmentsCorporateBondsGrp>
      <InvestmentsCorporateBondsGrp>
        <BondNm>US TREASURY NOTE</BondNm>
      </InvestmentsCorporateBondsGrp>
      <InvestmentsCorporateBondsGrp>
        <BondNm>US TREASURY NOTE</BondNm>
      </InvestmentsCorporateBondsGrp>
      <InvestmentsCorporateBondsGrp>
        <BondNm>US TREASURY NOTE</BondNm>
      </InvestmentsCorporateBondsGrp>
      <InvestmentsCorporateBondsGrp>
        <BondNm>US TREASURY NOTE</BondNm>
      </InvestmentsCorporateBondsGrp>
    </InvestmentsCorpBondsSchedule>
    <InvestmentsCorpStockSchedule documentId="InvestCorpStockSch">
      <InvestmentsCorporateStockGrp>
        <StockNm>COMFND CAP US PRIV EQ PTNRS IX</StockNm>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <InvestmentsGovtObligationsSch documentId="InvGovtObligSch">
      <USGovtObligationsBookVlEOYAmt>2014592</USGovtObligationsBookVlEOYAmt>
      <USGovtObligationsEOYFMVAmt>2014592</USGovtObligationsEOYFMVAmt>
    </InvestmentsGovtObligationsSch>
    <InvestmentsOtherSchedule2 documentId="InvOtherSch2">
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>VANGUARD SMALL CAP</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>DODGE &amp; COX INTERNATIONAL</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>CAPITAL COUNSEL</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>FIDELITY SPARTAN 500</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>FIDELITY SPARTAN INTL</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>FIDELITY MUNICIPAL MONEY</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>DFA US SMALL CAP</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>DFA EMERGING MARKETS VALUE</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>DFA INTERNATIONAL SMALL CAP</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>ISHARES</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>SSGA PRIME MONEY MARKET</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>VANGUARD INSTITUTIONAL</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>VANGUARD DEVELOPED MARKETS</CategoryOrItemTxt>
      </InvestmentsOtherGrp>
    </InvestmentsOtherSchedule2>
    <OtherDecreasesSchedule documentId="OtherDecreasesSch">
      <OtherDecreasesDetail>
        <Desc>ACCRUED INCOME NOT YET RECEIVED</Desc>
        <Amt>10227</Amt>
      </OtherDecreasesDetail>
    </OtherDecreasesSchedule>
    <OtherExpensesSchedule documentId="OtherExpensesSch">
      <OtherExpensesScheduleGrp>
        <Desc>AMORTIZATION</Desc>
        <RevenueAndExpensesPerBooksAmt>22578</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>22578</NetInvestmentIncomeAmt>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherIncomeSchedule2 documentId="OtherIncomeSch2">
      <OtherIncomeDetail>
        <Desc>PARTNERSHIP INCOME</Desc>
        <RevenueAndExpensesPerBooksAmt>3916856</RevenueAndExpensesPerBooksAmt>
        <NetInvestmentIncomeAmt>10285</NetInvestmentIncomeAmt>
      </OtherIncomeDetail>
    </OtherIncomeSchedule2>
    <OtherIncreasesSchedule documentId="OtherIncreasesSch">
      <OtherIncreasesDetail>
        <Desc>PY ACCRUED INCOME RECEIVED</Desc>
        <Amt>6353</Amt>
      </OtherIncreasesDetail>
      <OtherIncreasesDetail>
        <Desc>UNREALIZED BOOK GAIN ON STOCK</Desc>
        <Amt>2701058</Amt>
      </OtherIncreasesDetail>
    </OtherIncreasesSchedule>
    <OtherProfessionalFeesSchedule documentId="OthProfFeesSch">
      <OtherProfessionalFeesDetail>
        <CategoryTxt>INVESTMENT FEES</CategoryTxt>
        <Amt>26654</Amt>
        <NetInvestmentIncomeAmt>26654</NetInvestmentIncomeAmt>
      </OtherProfessionalFeesDetail>
    </OtherProfessionalFeesSchedule>
    <TaxesSchedule documentId="TaxesSchedule">
      <TaxesDetail>
        <CategoryTxt>FOREIGN TAX WITHHOLDING</CategoryTxt>
        <Amt>26643</Amt>
        <NetInvestmentIncomeAmt>26643</NetInvestmentIncomeAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>FEDERAL TAX PAYMENTS</CategoryTxt>
        <Amt>81042</Amt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>
