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        <PersonNm>ALEXANDER ROSE</PersonNm>
        <TitleTxt>Executive Dir.</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <AverageHoursPerWeekRltdOrgRt>0.00</AverageHoursPerWeekRltdOrgRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>166577</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>5475</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>190577</TotalReportableCompFromOrgAmt>
      <TotalOtherCompensationAmt>5475</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>1</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>false</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>true</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>false</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>Chris Rand</PersonNm>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>2 MARINA BLVD BLDG A</AddressLine1Txt>
            <CityNm>SAND FRANCISCO</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94123</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>Work on Clock Proj.</ServicesDesc>
        <CompensationAmt>110858</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>1</CntrctRcvdGreaterThan100KCnt>
      <MembershipDuesAmt>472261</MembershipDuesAmt>
      <AllOtherContributionsAmt>510919</AllOtherContributionsAmt>
      <NoncashContributionsAmt>137355</NoncashContributionsAmt>
      <TotalContributionsAmt>983180</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>OTHER PROGRAM REVENUE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>47768</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>47768</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Seminars</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>14173</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>14173</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>Texas Clock</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>790044</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>790044</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>The Interval</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>65331</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>65331</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>917316</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
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        <ExclusionAmt>124357</ExclusionAmt>
      </InvestmentIncomeGrp>
      <IncmFromInvestBondProceedsGrp>
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      </IncmFromInvestBondProceedsGrp>
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      </RoyaltiesRevenueGrp>
      <NetRentalIncomeOrLossGrp>
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      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>1366860</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
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      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
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      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
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        <RelatedOrExemptFuncIncomeAmt>224480</RelatedOrExemptFuncIncomeAmt>
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      <NetIncomeFromGamingGrp>
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      <GrossSalesOfInventoryAmt>880390</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>313730</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
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        <ExclusionAmt>566660</ExclusionAmt>
      </NetIncomeOrLossGrp>
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        <Desc>Other income</Desc>
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        <RelatedOrExemptFuncIncomeAmt>14821</RelatedOrExemptFuncIncomeAmt>
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      <TotalRevenueGrp>
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        <RelatedOrExemptFuncIncomeAmt>1156617</RelatedOrExemptFuncIncomeAmt>
        <ExclusionAmt>691017</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <GrantsToDomesticOrgsGrp>
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        <ProgramServicesAmt>170636</ProgramServicesAmt>
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      <GrantsToDomesticIndividualsGrp>
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      <BenefitsToMembersGrp>
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      <CompCurrentOfcrDirectorsGrp>
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        <ProgramServicesAmt>106911</ProgramServicesAmt>
        <ManagementAndGeneralAmt>40638</ManagementAndGeneralAmt>
        <FundraisingAmt>14951</FundraisingAmt>
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        <FundraisingAmt>8278</FundraisingAmt>
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        <FundraisingAmt>17</FundraisingAmt>
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        <FundraisingAmt>708</FundraisingAmt>
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      <FeesForServicesLobbyingGrp>
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      <FeesForSrvcInvstMgmntFeesGrp>
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      <FeesForServicesOtherGrp>
        <TotalAmt>736371</TotalAmt>
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        <ManagementAndGeneralAmt>73573</ManagementAndGeneralAmt>
        <FundraisingAmt>21603</FundraisingAmt>
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      <AdvertisingGrp>
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        <ProgramServicesAmt>24899</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2726</ManagementAndGeneralAmt>
        <FundraisingAmt>679</FundraisingAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>55182</TotalAmt>
        <ProgramServicesAmt>48353</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5680</ManagementAndGeneralAmt>
        <FundraisingAmt>1149</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>44032</TotalAmt>
        <ProgramServicesAmt>38735</ProgramServicesAmt>
        <ManagementAndGeneralAmt>4241</ManagementAndGeneralAmt>
        <FundraisingAmt>1056</FundraisingAmt>
      </InformationTechnologyGrp>
      <RoyaltiesGrp>
        <TotalAmt>0</TotalAmt>
      </RoyaltiesGrp>
      <OccupancyGrp>
        <TotalAmt>250571</TotalAmt>
        <ProgramServicesAmt>123995</ProgramServicesAmt>
        <ManagementAndGeneralAmt>125537</ManagementAndGeneralAmt>
        <FundraisingAmt>1039</FundraisingAmt>
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      <TravelGrp>
        <TotalAmt>63882</TotalAmt>
        <ProgramServicesAmt>50516</ProgramServicesAmt>
        <ManagementAndGeneralAmt>12745</ManagementAndGeneralAmt>
        <FundraisingAmt>621</FundraisingAmt>
      </TravelGrp>
      <PymtTravelEntrtnmntPubOfclGrp>
        <TotalAmt>0</TotalAmt>
      </PymtTravelEntrtnmntPubOfclGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>0</TotalAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>0</TotalAmt>
      </InterestGrp>
      <PaymentsToAffiliatesGrp>
        <TotalAmt>0</TotalAmt>
      </PaymentsToAffiliatesGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>144949</TotalAmt>
        <ProgramServicesAmt>142005</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2944</ManagementAndGeneralAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>21023</TotalAmt>
        <ProgramServicesAmt>18494</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2025</ManagementAndGeneralAmt>
        <FundraisingAmt>504</FundraisingAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>SUPPLIES</Desc>
        <TotalAmt>134985</TotalAmt>
        <ProgramServicesAmt>113311</ProgramServicesAmt>
        <ManagementAndGeneralAmt>18532</ManagementAndGeneralAmt>
        <FundraisingAmt>3142</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>Postage and Shipping</Desc>
        <TotalAmt>28114</TotalAmt>
        <ProgramServicesAmt>24732</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2707</ManagementAndGeneralAmt>
        <FundraisingAmt>675</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>Equipment rental</Desc>
        <TotalAmt>13441</TotalAmt>
        <ProgramServicesAmt>6651</ProgramServicesAmt>
        <ManagementAndGeneralAmt>6734</ManagementAndGeneralAmt>
        <FundraisingAmt>56</FundraisingAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MISCELLANEOUS Equipment</Desc>
        <TotalAmt>11449</TotalAmt>
        <ProgramServicesAmt>9611</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1572</ManagementAndGeneralAmt>
        <FundraisingAmt>266</FundraisingAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>12580</TotalAmt>
        <ProgramServicesAmt>11066</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1212</ManagementAndGeneralAmt>
        <FundraisingAmt>302</FundraisingAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>3436735</TotalAmt>
        <ProgramServicesAmt>2576206</ProgramServicesAmt>
        <ManagementAndGeneralAmt>679547</ManagementAndGeneralAmt>
        <FundraisingAmt>180982</FundraisingAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>64863</BOYAmt>
        <EOYAmt>25487</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>583096</BOYAmt>
        <EOYAmt>770858</EOYAmt>
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      <PledgesAndGrantsReceivableGrp>
        <EOYAmt>0</EOYAmt>
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      <AccountsReceivableGrp>
        <BOYAmt>87041</BOYAmt>
        <EOYAmt>12861</EOYAmt>
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      <ReceivablesFromOfficersEtcGrp>
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      </ReceivablesFromOfficersEtcGrp>
      <RcvblFromDisqualifiedPrsnGrp>
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      <OthNotesLoansReceivableNetGrp>
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      </OthNotesLoansReceivableNetGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>51658</BOYAmt>
        <EOYAmt>49209</EOYAmt>
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      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>9345</BOYAmt>
        <EOYAmt>36159</EOYAmt>
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      <LandBldgEquipCostOrOtherBssAmt>1568176</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>476988</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>1236137</BOYAmt>
        <EOYAmt>1091188</EOYAmt>
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      <InvestmentsPubTradedSecGrp>
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        <EOYAmt>6437369</EOYAmt>
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      <InvestmentsOtherSecuritiesGrp>
        <EOYAmt>0</EOYAmt>
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      <InvestmentsProgramRelatedGrp>
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      </InvestmentsProgramRelatedGrp>
      <IntangibleAssetsGrp>
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      <OtherAssetsTotalGrp>
        <EOYAmt>0</EOYAmt>
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      <TotalAssetsGrp>
        <BOYAmt>8313309</BOYAmt>
        <EOYAmt>8423131</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>70855</BOYAmt>
        <EOYAmt>189015</EOYAmt>
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      <TotalLiabilitiesGrp>
        <BOYAmt>70855</BOYAmt>
        <EOYAmt>189015</EOYAmt>
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      <OrganizationFollowsSFAS117Ind>X</OrganizationFollowsSFAS117Ind>
      <UnrestrictedNetAssetsGrp>
        <BOYAmt>2490034</BOYAmt>
        <EOYAmt>2493148</EOYAmt>
      </UnrestrictedNetAssetsGrp>
      <TemporarilyRstrNetAssetsGrp>
        <BOYAmt>5752420</BOYAmt>
        <EOYAmt>5740968</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>8242454</BOYAmt>
        <EOYAmt>8234116</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>8313309</BOYAmt>
        <EOYAmt>8423131</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>-605921</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>635678</NetUnrlzdGainsLossesInvstAmt>
      <InvestmentExpenseAmt>-38095</InvestmentExpenseAmt>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>false</AccountantCompileOrReviewInd>
      <FSAuditedInd>true</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
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      <AuditCommitteeInd>true</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>false</FederalGrantAuditRequiredInd>
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    <IRS990ScheduleA documentId="IRS990ScheduleA" softwareId="17005038" softwareVersionNum="2017v2.2">
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        <CurrentTaxYearMinus3YearsAmt>1281405</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>994261</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1171096</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>983180</CurrentTaxYearAmt>
        <TotalAmt>5492616</TotalAmt>
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      <TaxRevLeviedOrgnztnlBnft170Grp>
        <TotalAmt>0</TotalAmt>
      </TaxRevLeviedOrgnztnlBnft170Grp>
      <GovtFurnSrvcFcltsVl170Grp>
        <TotalAmt>0</TotalAmt>
      </GovtFurnSrvcFcltsVl170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>1062674</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1281405</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>994261</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1171096</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>983180</CurrentTaxYearAmt>
        <TotalAmt>5492616</TotalAmt>
      </TotalCalendarYear170Grp>
      <SubstantialContributorsTotAmt>0</SubstantialContributorsTotAmt>
      <PublicSupportTotal170Amt>5492616</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>886085</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>671470</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>140025</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>99017</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>124357</CurrentTaxYearAmt>
        <TotalAmt>1920954</TotalAmt>
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      <UnrelatedBusinessNetIncm170Grp>
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      </UnrelatedBusinessNetIncm170Grp>
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        <CurrentTaxYearMinus2YearsAmt>746487</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>685630</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>805961</CurrentTaxYearAmt>
        <TotalAmt>2238078</TotalAmt>
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      <TotalSupportAmt>9651648</TotalSupportAmt>
      <PublicSupportCY170Pct>0.56910</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.65540</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
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    <IRS990ScheduleD documentId="IRS990ScheduleD" softwareId="17005038" softwareVersionNum="2017v2.2">
      <LandGrp>
        <OtherCostOrOtherBasisAmt>388976</OtherCostOrOtherBasisAmt>
        <BookValueAmt>388976</BookValueAmt>
      </LandGrp>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>900136</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>292991</DepreciationAmt>
        <BookValueAmt>607145</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
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        <DepreciationAmt>175556</DepreciationAmt>
        <BookValueAmt>82784</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>20724</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>8441</DepreciationAmt>
        <BookValueAmt>12283</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>1091188</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>4165527</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>635678</NetUnrealizedGainsInvstAmt>
      <OtherRevenueAmt>737130</OtherRevenueAmt>
      <RevenueNotReportedAmt>1372808</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>2792719</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>38095</InvestmentExpensesNotIncldAmt>
      <RevenueNotReportedFinclStmtAmt>38095</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>2830814</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>4173865</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>737130</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>737130</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>3436735</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>3436735</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part X : FIN48 Footnote</FormAndLineReferenceDesc>
        <ExplanationTxt>The Foundation is organized as a not-for-profit organization and is exempt from income taxes under section 501(c)(3) of the Internal Revenue Code. Unrelated business income, of which the Foundation had none for the years ended December 31, 2017 and 2016, would be subject to federal income taxes. The Foundation's information returns filed with the Internal Revenue Service have not been examined in the past. The Foundation is not aware of any uncertainties that could jeopardize its not-for-profit status. Therefore, no provision or liability for income taxes is deemed necessary. The Foundation follows the provisions of uncertain tax positions addressed by FAS ASC 740-10 Accounting for Uncertainty in Income Taxes. The Foundation has no uncertain tax positions at December 31, 2017, for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. The Foundation recognizes interest accrued related to unrecognized tax benefits in interest expense and penalties in operating expense. The Foundation has determined that no amount is required to be accrued for taxes or related penalties and interest for any tax position taken through December 31, 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XI, Line 2d: Other revenue amounts included in F/S but not included on form 990</FormAndLineReferenceDesc>
        <ExplanationTxt>COGS related to Inventory Sales on Pg 9 $313730 Net Assets Released from Restrictions $423400</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part XII, Line 2d: Other expenses and losses per audited F/S</FormAndLineReferenceDesc>
        <ExplanationTxt>COGS related to Inventory Sales on Pg 9 $313730 Net Assets Released From Restrictions $423400</ExplanationTxt>
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          <BusinessNameLine1Txt>The Anthropocene Project Lmtd</BusinessNameLine1Txt>
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          <AddressLine1Txt>383B Markham Street</AddressLine1Txt>
          <CityNm>Toronto</CityNm>
          <ProvinceOrStateNm>Ontario</ProvinceOrStateNm>
          <CountryCd>CA</CountryCd>
          <ForeignPostalCd>M6G2K8</ForeignPostalCd>
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        <PurposeOfGrantTxt>Grant for the Anthropocene Film</PurposeOfGrantTxt>
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        <PersonNm>ALEXANDER ROSE</PersonNm>
        <TitleTxt>Executive Dir.</TitleTxt>
        <BaseCompensationFilingOrgAmt>166577</BaseCompensationFilingOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>5475</NontaxableBenefitsFilingOrgAmt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 3: Ceased Conducting or Significant Changes To Services</FormAndLineReferenceDesc>
        <ExplanationTxt>Revive and Restore spun off as its own nonprofit at the beginning of 2017.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part III, Line 4d: Other Program Services Description</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROGRAM SERVICES 4: The Long Now Foundation engages in various projects and programs whose aim is to creatively foster responsibility in the framework of the next 10,000 years. Besides the 10,000 Year Clock and Seminars about Long-term Thinking, these projects include Long Bets, The Rosetta Project, Panlex, and Revive and Restore. At the end of 02016, The Revive &amp; Restore project spun off of the Long Now Foundation and as of 02017 is a separate non-profit organization. OTHER PROGRAM SERVICES 5: OTHER PROGRAM SERVICES 6: The Interval Salon - a space in Fort Mason Center open to the public seven days a week that includes project installations and exhibits, a library, beverages, and an educational events program. It is a compelling venue for conversation that invites visitors to spend time in a place that itself encourages long-term thinking.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 11b: Form 990 Review Process</FormAndLineReferenceDesc>
        <ExplanationTxt>The Executive Director and Board review the 990 before filing.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Line 12c: Explanation of Monitoring and Enforcement of Conflicts</FormAndLineReferenceDesc>
        <ExplanationTxt>All Trustees, Directors, Officers, and Key Employees are required to sign a Conflict of Interest policy. It is the policy of the Board that the existence of any interests that give rise to conflict be disclosed on a timely basis and always before any transaction is consummated. It shall be the continuing responsibility of the Board, officers, and management employees to scrutinize their transactions and outside business interests and relationships for potential conflicts and to immediately make such disclosures. Board member disclosures should be made to a Board officer and staff disclosures should be made to the chief executive. The Board shall determine whether a conflict exists and is material, and in the presence of an existing material conflict, whether the contemplated transaction may be authorized as just, fair, and reasonable to Long Now. The decision of the BOard on these matters will rest in their sole discretion, and their concern must be the welfare of Long Now and the advancement of its purpose.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15a: Compensation Review &amp; Approval Process - CEO, Top Management</FormAndLineReferenceDesc>
        <ExplanationTxt>The Executive Director compensation is based on Board review and comparison data with other Northern California nonprofit organizations.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Line 15b: Compensation Review and Approval Process for Officers and Key Employees</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD MEMBERS DO NOT RECEIVE FINANCIAL COMPENSATION FOR BEING ON THE BOARD. BOARD MEMBERS MAY BE COMPENSATED FOR SPECIFIC SERVICES THEY PROVIDE FOR THE ORGANIZATION, SUCH AS HOSTING AND CURATING A PUBLIC SPEAKING SERIES. COMPENSATION FOR KEY EMPLOYEES IS RECOMMENDED BY THE EXECUTIVE DIRECTOR AND REVIEWED BY THE BOARD OF DIRECTORS.</ExplanationTxt>
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        <FormAndLineReferenceDesc>Form 990, Part VI, Line 19: Other Organization Documents Publicly Available</FormAndLineReferenceDesc>
        <ExplanationTxt>The Long Now Foundation's 990s are available through Guidestar (www.guidestar.org). All other governing documents are available by request as per applicable laws.</ExplanationTxt>
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