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            <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>200000</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>100000</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>25000</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>60000</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>20000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <GrantOrContributionPdDurYrGrp>
          <RecipientBusinessName>
            <BusinessNameLine1Txt>MUSEUM OF NORTHERN ARIZONA</BusinessNameLine1Txt>
          </RecipientBusinessName>
          <RecipientUSAddress>
            <AddressLine1Txt>3101 N FORT VALLEY RD</AddressLine1Txt>
            <CityNm>FLAGSTAFF</CityNm>
            <StateAbbreviationCd>AZ</StateAbbreviationCd>
            <ZIPCd>86001</ZIPCd>
          </RecipientUSAddress>
          <RecipientRelationshipTxt>NONE</RecipientRelationshipTxt>
          <GrantOrContributionPurposeTxt>CHARITABLE</GrantOrContributionPurposeTxt>
          <Amt>50000</Amt>
        </GrantOrContributionPdDurYrGrp>
        <TotalGrantOrContriPdDurYrAmt>1830000</TotalGrantOrContriPdDurYrAmt>
      </SupplementaryInformationGrp>
      <AnalysisIncomeProducingActyGrp>
        <FeesContractsFromGovtAgGrp />
        <MembershipDuesAndAssmntGrp />
        <IntOnSavAndTempCashInvstGrp>
          <UnrelatedBusinessTaxblIncmAmt>83736</UnrelatedBusinessTaxblIncmAmt>
        </IntOnSavAndTempCashInvstGrp>
        <DividendsAndInterestFromSecDtl>
          <UnrelatedBusinessTaxblIncmAmt>256251</UnrelatedBusinessTaxblIncmAmt>
        </DividendsAndInterestFromSecDtl>
        <NetRntlIncmReDebtFincdPropGrp />
        <NetRntlIncmReNotDebtFincdProp />
        <NetRentalIncomePersonalPropGrp />
        <OtherInvestmentIncomeGrp>
          <UnrelatedBusinessTaxblIncmAmt>3388551</UnrelatedBusinessTaxblIncmAmt>
        </OtherInvestmentIncomeGrp>
        <GainSalesAstOthThanInvntryGrp>
          <UnrelatedBusinessTaxblIncmAmt>337551</UnrelatedBusinessTaxblIncmAmt>
        </GainSalesAstOthThanInvntryGrp>
        <NetIncomeLossFromSpecialEvtGrp />
        <GrossProfitLossSlsOfInvntryGrp />
        <SubtotalsIncmProducingActyGrp>
          <UnrelatedBusinessTaxblIncmAmt>4066089</UnrelatedBusinessTaxblIncmAmt>
        </SubtotalsIncmProducingActyGrp>
        <TotalIncomeProducingActyAmt>4066089</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>2850916</EOYBookValueAmt>
        <EOYFMVAmt>2829612</EOYFMVAmt>
      </InvestmentsCorporateBondsGrp>
    </InvestmentsCorpBondsSchedule>
    <InvestmentsCorpStockSchedule documentId="InvestCorpStockSch">
      <InvestmentsCorporateStockGrp>
        <StockNm>FROST SERVICES (SEE ATTACHED)</StockNm>
        <EOYBookValueAmt>2035109</EOYBookValueAmt>
        <EOYFMVAmt>3829184</EOYFMVAmt>
      </InvestmentsCorporateStockGrp>
    </InvestmentsCorpStockSchedule>
    <InvestmentsOtherSchedule2 documentId="InvOtherSch2">
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>MINERALS</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>4789760</BookValueAmt>
        <EOYFMVAmt>13023717</EOYFMVAmt>
      </InvestmentsOtherGrp>
      <InvestmentsOtherGrp>
        <CategoryOrItemTxt>FROST SERVICES (SEE ATTACHED)</CategoryOrItemTxt>
        <ListedAtCostOrFMVCd>AT COST</ListedAtCostOrFMVCd>
        <BookValueAmt>5149997</BookValueAmt>
        <EOYFMVAmt>5137158</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>
      </LegalFeesGrp>
    </LegalFeesSchedule>
    <OtherExpensesSchedule documentId="OtherExpensesSch">
      <OtherExpensesScheduleGrp>
        <Desc>OFFICE SUPPLIES</Desc>
      </OtherExpensesScheduleGrp>
    </OtherExpensesSchedule>
    <OtherProfessionalFeesSchedule documentId="OthProfFeesSch">
      <OtherProfessionalFeesDetail>
        <CategoryTxt>INVESTMENT FEES</CategoryTxt>
        <Amt>99685</Amt>
        <NetInvestmentIncomeAmt>99685</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>99685</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
      <OtherProfessionalFeesDetail>
        <CategoryTxt>PROFESSIONAL FEES</CategoryTxt>
        <Amt>58956</Amt>
        <NetInvestmentIncomeAmt>58956</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>58956</DisbursementsCharitablePrpsAmt>
      </OtherProfessionalFeesDetail>
    </OtherProfessionalFeesSchedule>
    <TaxesSchedule documentId="TaxesSchedule">
      <TaxesDetail>
        <CategoryTxt>INCOME TAXES</CategoryTxt>
        <Amt>75683</Amt>
        <NetInvestmentIncomeAmt>75683</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>75683</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>PROPERTY TAXES</CategoryTxt>
        <Amt>60449</Amt>
        <NetInvestmentIncomeAmt>60449</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>60449</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>FOREIGN TAXES PAID</CategoryTxt>
        <Amt>5454</Amt>
        <NetInvestmentIncomeAmt>5454</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>5454</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
      <TaxesDetail>
        <CategoryTxt>SEVERENCE TAXES</CategoryTxt>
        <Amt>136400</Amt>
        <NetInvestmentIncomeAmt>136400</NetInvestmentIncomeAmt>
        <DisbursementsCharitablePrpsAmt>136400</DisbursementsCharitablePrpsAmt>
      </TaxesDetail>
    </TaxesSchedule>
  </ReturnData>
</Return>