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        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>27261</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>414966</TotalAmt>
        <ProgramServicesAmt>414966</ProgramServicesAmt>
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      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>68750</TotalAmt>
        <ProgramServicesAmt>34375</ProgramServicesAmt>
        <ManagementAndGeneralAmt>24062</ManagementAndGeneralAmt>
        <FundraisingAmt>10313</FundraisingAmt>
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      <OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>4329</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3030</ManagementAndGeneralAmt>
        <FundraisingAmt>1299</FundraisingAmt>
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      <PayrollTaxesGrp>
        <TotalAmt>5458</TotalAmt>
        <ProgramServicesAmt>2728</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1913</ManagementAndGeneralAmt>
        <FundraisingAmt>817</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>6272</TotalAmt>
        <ManagementAndGeneralAmt>5018</ManagementAndGeneralAmt>
        <FundraisingAmt>1254</FundraisingAmt>
      </FeesForServicesAccountingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>1760</TotalAmt>
        <ProgramServicesAmt>880</ProgramServicesAmt>
        <ManagementAndGeneralAmt>616</ManagementAndGeneralAmt>
        <FundraisingAmt>264</FundraisingAmt>
      </OfficeExpensesGrp>
      <OccupancyGrp>
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        <ProgramServicesAmt>1500</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1050</ManagementAndGeneralAmt>
        <FundraisingAmt>450</FundraisingAmt>
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      <ConferencesMeetingsGrp>
        <TotalAmt>1958</TotalAmt>
        <ManagementAndGeneralAmt>1566</ManagementAndGeneralAmt>
        <FundraisingAmt>392</FundraisingAmt>
      </ConferencesMeetingsGrp>
      <InsuranceGrp>
        <TotalAmt>1781</TotalAmt>
        <ProgramServicesAmt>1336</ProgramServicesAmt>
        <ManagementAndGeneralAmt>178</ManagementAndGeneralAmt>
        <FundraisingAmt>267</FundraisingAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>Publications</Desc>
        <TotalAmt>11234</TotalAmt>
        <ProgramServicesAmt>8426</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1123</ManagementAndGeneralAmt>
        <FundraisingAmt>1685</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>Bank and cc merchant fees</Desc>
        <TotalAmt>5528</TotalAmt>
        <ManagementAndGeneralAmt>4422</ManagementAndGeneralAmt>
        <FundraisingAmt>1106</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Postage</Desc>
        <TotalAmt>1904</TotalAmt>
        <ProgramServicesAmt>1428</ProgramServicesAmt>
        <ManagementAndGeneralAmt>190</ManagementAndGeneralAmt>
        <FundraisingAmt>286</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Telecommunications</Desc>
        <TotalAmt>2678</TotalAmt>
        <ProgramServicesAmt>1339</ProgramServicesAmt>
        <ManagementAndGeneralAmt>937</ManagementAndGeneralAmt>
        <FundraisingAmt>402</FundraisingAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>6066</TotalAmt>
        <ProgramServicesAmt>3033</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2123</ManagementAndGeneralAmt>
        <FundraisingAmt>910</FundraisingAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>540013</TotalAmt>
        <ProgramServicesAmt>474340</ProgramServicesAmt>
        <ManagementAndGeneralAmt>46228</ManagementAndGeneralAmt>
        <FundraisingAmt>19445</FundraisingAmt>
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      <JointCostsInd>X</JointCostsInd>
      <CashNonInterestBearingGrp>
        <BOYAmt>10882</BOYAmt>
        <EOYAmt>41479</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
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        <EOYAmt>382960</EOYAmt>
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      <AccountsReceivableGrp>
        <BOYAmt>9011</BOYAmt>
        <EOYAmt>6826</EOYAmt>
      </AccountsReceivableGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>1196</BOYAmt>
        <EOYAmt>973</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>2034</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>2034</LandBldgEquipAccumDeprecAmt>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>126664</BOYAmt>
        <EOYAmt>119721</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <TotalAssetsGrp>
        <BOYAmt>490892</BOYAmt>
        <EOYAmt>551959</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>20541</BOYAmt>
        <EOYAmt>16064</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <OtherLiabilitiesGrp>
        <BOYAmt>205452</BOYAmt>
        <EOYAmt>258692</EOYAmt>
      </OtherLiabilitiesGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>225993</BOYAmt>
        <EOYAmt>274756</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>138235</BOYAmt>
        <EOYAmt>157482</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <PermanentlyRstrNetAssetsGrp>
        <BOYAmt>126664</BOYAmt>
        <EOYAmt>119721</EOYAmt>
      </PermanentlyRstrNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>264899</BOYAmt>
        <EOYAmt>277203</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>490892</BOYAmt>
        <EOYAmt>551959</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>12304</ReconcilationRevenueExpnssAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="990A">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>268548</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>347101</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>707038</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>481890</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>525056</CurrentTaxYearAmt>
        <TotalAmt>2329633</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>268548</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>347101</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>707038</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>481890</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>525056</CurrentTaxYearAmt>
        <TotalAmt>2329633</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>231128</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>2098505</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>6414</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>281</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>8559</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14172</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>29426</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <TotalSupportAmt>2359059</TotalSupportAmt>
      <PublicSupportCY170Pct>0.88960</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.86200</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="990B" />
    <IRS990ScheduleD documentId="990D">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>126664</BeginningYearBalanceAmt>
        <ContributionsAmt>267</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-7210</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>119721</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
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        <ContributionsAmt>252</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>13804</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>126664</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>104574</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>8034</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>112608</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>104690</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>-116</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>104574</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>98750</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>5940</InvestmentEarningsOrLossesAmt>
        <EndYearBalanceAmt>104690</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <PrmnntEndowmentBalanceEOYPct>1.00000</PrmnntEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>true</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>false</EndowmentsHeldRelatedOrgInd>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>2034</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>2034</DepreciationAmt>
      </EquipmentGrp>
      <OtherLiabilitiesOrgGrp>
        <Desc>DEFERRED REVENUE</Desc>
        <Amt>258692</Amt>
      </OtherLiabilitiesOrgGrp>
      <TotalLiabilityAmt>258692</TotalLiabilityAmt>
      <TotalRevEtcAuditedFinclStmtAmt>552317</TotalRevEtcAuditedFinclStmtAmt>
      <RevenueSubtotalAmt>552317</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>552317</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>540013</TotExpnsEtcAuditedFinclStmtAmt>
      <ExpensesSubtotalAmt>540013</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>540013</TotalExpensesPerForm990Amt>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="990G">
      <FundraisingEventInformationGrp>
        <Event1Nm>Dinner</Event1Nm>
        <GrossReceiptsEvent1Amt>58698</GrossReceiptsEvent1Amt>
        <GrossRevenueEvent1Amt>58698</GrossRevenueEvent1Amt>
        <FoodAndBeverageEvent1Amt>32756</FoodAndBeverageEvent1Amt>
        <Event2Nm>Other</Event2Nm>
        <GrossReceiptsEvent2Amt>1319</GrossReceiptsEvent2Amt>
        <GrossRevenueEvent2Amt>1319</GrossRevenueEvent2Amt>
        <GrossReceiptsTotalAmt>60017</GrossReceiptsTotalAmt>
        <GrossRevenueTotalEventsAmt>60017</GrossRevenueTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>32756</FoodAndBeverageTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>32756</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>27261</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleI documentId="990I">
      <GrantRecordsMaintainedInd>true</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>Saguaro National Park</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2700 N Kinney Road</AddressLine1Txt>
          <CityNm>Tucson</CityNm>
          <StateAbbreviationCd>AZ</StateAbbreviationCd>
          <ZIPCd>85743</ZIPCd>
        </USAddress>
        <CashGrantAmt>414966</CashGrantAmt>
        <ValuationMethodUsedDesc>CASH</ValuationMethodUsedDesc>
        <PurposeOfGrantTxt>General support</PurposeOfGrantTxt>
      </RecipientTable>
    </IRS990ScheduleI>
    <IRS990ScheduleO documentId="990O">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990 governing body review Part VI line 11</FormAndLineReferenceDesc>
        <ExplanationTxt>The 990 is reviewed by the Treasurer and the Executive Committee prior to filing.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Conflict of interest policy compliance Part VI line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>Board members are required to disclose any conflicts of interest as they may arise by the next board meeting.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Governing documents etc available to public Part VI line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>All governing documents and the 990 are available for public inspection upon request at the organizatons office.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>