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            <CityNm>TUSCON</CityNm>
            <StateAbbreviationCd>AZ</StateAbbreviationCd>
            <ZIPCd>85719</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>50000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>SUL ROSS UNIVERSITY - CENTER FOR BIG BEND STUDIES</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>ATTN SUSAN CHISHOLM</AddressLine1Txt>
            <AddressLine2Txt>BOX C-71</AddressLine2Txt>
            <CityNm>ALPINE</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>79832</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>80000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>THE V FOUNDATION FOR CANCER RESEARCH</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>106 TOWERVIEW COURT</AddressLine1Txt>
            <CityNm>CARY</CityNm>
            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>27513</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>75000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>THE NATURE CONSERVANCY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>318 CONGRESS AVENUE</AddressLine1Txt>
            <CityNm>AUSTIN</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>78701</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>75000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>GRAND CANYON YOUTH</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>PO BOX 23376</AddressLine1Txt>
            <CityNm>FLAGSTAFF</CityNm>
            <StateAbbreviationCd>AZ</StateAbbreviationCd>
            <ZIPCd>86002</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>20000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>FRIENDS OF THE OBSERVATORY - GRIFFITH OBSERVATORY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>2800 EAST OBSERVATORY ROAD</AddressLine1Txt>
            <CityNm>LOS ANGELES</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>90027</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>50000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>AUDOBON SOCIETY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>225 VARICK ST</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>10014</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>25000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>AMERICAN CANCER SOCIETY</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>PO BOX 6704</AddressLine1Txt>
            <CityNm>HAGERSTOWN</CityNm>
            <StateAbbreviationCd>MD</StateAbbreviationCd>
            <ZIPCd>21741</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>10000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>1055000</TotalGrantOrContriPdDurYrAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <FeesContractsFromGovtAgGrp />
        <MembershipDuesAndAssmntGrp />
        <IntOnSavAndTempCashInvstGrp>
          <UnrelatedBusinessTaxblIncmAmt>100849</UnrelatedBusinessTaxblIncmAmt>
        </IntOnSavAndTempCashInvstGrp>
        <DividendsAndInterestFromSecDtl>
          <UnrelatedBusinessTaxblIncmAmt>215838</UnrelatedBusinessTaxblIncmAmt>
        </DividendsAndInterestFromSecDtl>
        <NetRntlIncmReDebtFincdPropGrp />
        <NetRntlIncmReNotDebtFincdProp />
        <NetRentalIncomePersonalPropGrp />
        <OtherInvestmentIncomeGrp>
          <UnrelatedBusinessTaxblIncmAmt>4926015</UnrelatedBusinessTaxblIncmAmt>
        </OtherInvestmentIncomeGrp>
        <GainSalesAstOthThanInvntryGrp>
          <UnrelatedBusinessTaxblIncmAmt>165943</UnrelatedBusinessTaxblIncmAmt>
        </GainSalesAstOthThanInvntryGrp>
        <NetIncomeLossFromSpecialEvtGrp />
        <GrossProfitLossSlsOfInvntryGrp />
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>5408645</UnrelatedBusinessTaxblIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>5408645</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>
    <DepreciationSchedule documentId="DepreciationSch" />
    <InvestmentsCorpBondsSchedule documentId="InvestCorpBondsSch">
      <InvestmentsCorporateBondsGrp>
        <BondNm>FROST SERVICES (SEE ATTACHED)</BondNm>
        <EOYBookValueAmt>2109398</EOYBookValueAmt>
        <EOYFMVAmt>2065753</EOYFMVAmt>
      </InvestmentsCorporateBondsGrp>
    </InvestmentsCorpBondsSchedule>
    <InvestmentsCorpStockSchedule documentId="InvestCorpStockSch">
      <InvestmentsCorporateStockGrp>
        <StockNm>FROST SERVICES (SEE ATTACHED)</StockNm>
        <EOYBookValueAmt>2039895</EOYBookValueAmt>
        <EOYFMVAmt>3163760</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <InvestmentsOtherSchedule2 documentId="InvOtherSch2">
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>MINERALS</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>4789760</BookValueAmt>
        <EOYFMVAmt>14425410</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>FROST SERVICES (SEE ATTACHED)</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>5253545</BookValueAmt>
        <EOYFMVAmt>5372497</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>FROST SERVICES - CD</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>7000000</BookValueAmt>
        <EOYFMVAmt>7000000</EOYFMVAmt>
      </InvestmentsOtherGrp>
    </InvestmentsOtherSchedule2>
    <LegalFeesSchedule documentId="LegalFeesSch">
      <LegalFeesGrp>
        <CategoryTxt>LEGAL FEES</CategoryTxt>
        <LegalFeesAmt>4000</LegalFeesAmt>
        <NetInvestmentIncomeAmt>4000</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>4000</DisbursementsCharitablePrpsAmt>
      </LegalFeesGrp>
    </LegalFeesSchedule>
    <OtherExpensesSchedule documentId="OtherExpensesSch">
      <OtherExpensesScheduleGrp>
        <Desc>OFFICE SUPPLIES</Desc>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherProfessionalFeesSchedule documentId="OthProfFeesSch">
      <OtherProfessionalFeesDetail>
        <CategoryTxt>INVESTMENT FEES</CategoryTxt>
        <Amt>91153</Amt>
        <NetInvestmentIncomeAmt>91153</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>91153</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
      <OtherProfessionalFeesDetail>
        <CategoryTxt>PROFESSIONAL FEES</CategoryTxt>
        <Amt>22120</Amt>
        <NetInvestmentIncomeAmt>22120</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>22120</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
    </OtherProfessionalFeesSchedule>
    <TaxesSchedule documentId="TaxesSchedule">
      <TaxesDetail>
        <CategoryTxt>INCOME TAXES</CategoryTxt>
        <Amt>100000</Amt>
        <NetInvestmentIncomeAmt>100000</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>100000</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>PROPERTY TAXES</CategoryTxt>
        <Amt>39939</Amt>
        <NetInvestmentIncomeAmt>39939</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>39939</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>FOREIGN TAXES PAID</CategoryTxt>
        <Amt>2715</Amt>
        <NetInvestmentIncomeAmt>2715</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>2715</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>SEVERENCE TAXES</CategoryTxt>
        <Amt>199867</Amt>
        <NetInvestmentIncomeAmt>199867</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>199867</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>