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        <ReportableCompFromOrgAmt>321118</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>55062</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN P WALTERS</PersonNm>
        <TitleTxt>CHIEF OPERATING OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>408204</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>51230</OtherCompensationAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>STEVE CORDER</PersonNm>
        <TitleTxt>DIR.FINANCE&amp;TREASURER(FROM 12/17)</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>6834</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>1518</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL SPARROW</PersonNm>
        <TitleTxt>DIR.FINANCE&amp;TREASURER(THRU 11/17)</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>147753</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>14418</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MATTHEW HUNTER</PersonNm>
        <TitleTxt>DIR.STRATEGIC PARTNERSHIPS&amp;SECRETARY</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>89169</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>7291</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DANIEL MCKIVERGAN</PersonNm>
        <TitleTxt>VP GOVERNMENT RELATIONS</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>194969</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>26551</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>R BRIAN BLAKE</PersonNm>
        <TitleTxt>SENIOR FELLOW AND VP DEVELOPMENT</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>183393</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>22261</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID TELL</PersonNm>
        <TitleTxt>DIR.PUBLIC AFFAIRS&amp;SPECIAL PROJECTS</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>159213</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>40151</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOEL SCANLON</PersonNm>
        <TitleTxt>DIRECTOR OF STUDIES</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <KeyEmployeeInd>X</KeyEmployeeInd>
        <ReportableCompFromOrgAmt>163019</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>16405</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHRISTOPHER DEMUTH</PersonNm>
        <TitleTxt>DISTINGUISHED FELLOW</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>188547</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>42616</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>HILLEL FRADKIN</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>215340</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>43609</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>WALTER RUSSELL MEAD</PersonNm>
        <TitleTxt>DISTINGUISHED FELLOW</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>284158</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>14436</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ARTHUR HERMAN</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>194160</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>19254</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>MICHAEL DORAN</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
        <AverageHoursPerWeekRt>50.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>243665</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>36378</OtherCompensationAmt>
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      <TotalReportableCompFromOrgAmt>3219439</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>447031</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>21</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>AMERICAN PHILANTHROPIC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>18 N CHURCH STREET 2</AddressLine1Txt>
            <CityNm>WEST CHESTER</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>19380</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>FUNDRAISING</ServicesDesc>
        <CompensationAmt>181560</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>RAYMOND C KENNEDY</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>713 VALENCIA ROAD</AddressLine1Txt>
            <CityNm>VENICE</CityNm>
            <StateAbbreviationCd>FL</StateAbbreviationCd>
            <ZIPCd>34285</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSULTANT</ServicesDesc>
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      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>STELZER ASSOCIATES INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>0372 NORTH STARWOOD DRIVE</AddressLine1Txt>
            <CityNm>ASPEN</CityNm>
            <StateAbbreviationCd>CO</StateAbbreviationCd>
            <ZIPCd>81611</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSULTANT</ServicesDesc>
        <CompensationAmt>150707</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>SETH CROPSEY</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>5906 OVERLEA ROAD</AddressLine1Txt>
            <CityNm>BETHESDA</CityNm>
            <StateAbbreviationCd>MD</StateAbbreviationCd>
            <ZIPCd>20816</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSULTANT</ServicesDesc>
        <CompensationAmt>110323</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>SOLARIUM LLC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>42661 LITTLE SORREL LANE</AddressLine1Txt>
            <CityNm>LEESBURG</CityNm>
            <StateAbbreviationCd>VA</StateAbbreviationCd>
            <ZIPCd>20176</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSULTANT</ServicesDesc>
        <CompensationAmt>105900</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>7</CntrctRcvdGreaterThan100KCnt>
      <FundraisingAmt>910655</FundraisingAmt>
      <AllOtherContributionsAmt>17037776</AllOtherContributionsAmt>
      <NoncashContributionsAmt>7457157</NoncashContributionsAmt>
      <TotalContributionsAmt>17948431</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>INDEPENDENT RESEARCH</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>492140</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>492140</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>492140</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>1151013</TotalRevenueColumnAmt>
        <ExclusionAmt>1151013</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>6585938</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>6483777</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>102161</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>102161</TotalRevenueColumnAmt>
        <ExclusionAmt>102161</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <FundraisingGrossIncomeAmt>55000</FundraisingGrossIncomeAmt>
      <ContriRptFundraisingEventAmt>910655</ContriRptFundraisingEventAmt>
      <FundraisingDirectExpensesAmt>162750</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>-107750</TotalRevenueColumnAmt>
        <ExclusionAmt>-107750</ExclusionAmt>
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      <OtherRevenueMiscGrp>
        <Desc>BOOK &amp; PUBLICATION SALES</Desc>
        <BusinessCd>511130</BusinessCd>
        <TotalRevenueColumnAmt>310</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>310</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>310</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>19586305</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>492450</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>1145424</ExclusionAmt>
      </TotalRevenueGrp>
      <InfoInScheduleOPartIXInd>X</InfoInScheduleOPartIXInd>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>2384307</TotalAmt>
        <ProgramServicesAmt>1901478</ProgramServicesAmt>
        <ManagementAndGeneralAmt>144080</ManagementAndGeneralAmt>
        <FundraisingAmt>338749</FundraisingAmt>
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        <ProgramServicesAmt>3664648</ProgramServicesAmt>
        <ManagementAndGeneralAmt>174473</ManagementAndGeneralAmt>
        <FundraisingAmt>73822</FundraisingAmt>
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      <PensionPlanContributionsGrp>
        <TotalAmt>300785</TotalAmt>
        <ProgramServicesAmt>244915</ProgramServicesAmt>
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      <OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>287424</ProgramServicesAmt>
        <ManagementAndGeneralAmt>27423</ManagementAndGeneralAmt>
        <FundraisingAmt>64474</FundraisingAmt>
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      <PayrollTaxesGrp>
        <TotalAmt>395067</TotalAmt>
        <ProgramServicesAmt>299356</ProgramServicesAmt>
        <ManagementAndGeneralAmt>28561</ManagementAndGeneralAmt>
        <FundraisingAmt>67150</FundraisingAmt>
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      <FeesForServicesLegalGrp>
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        <ProgramServicesAmt>56808</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7182</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>103318</TotalAmt>
        <ProgramServicesAmt>84127</ProgramServicesAmt>
        <ManagementAndGeneralAmt>19191</ManagementAndGeneralAmt>
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      <FeesForServicesProfFundraising>
        <TotalAmt>162750</TotalAmt>
        <FundraisingAmt>162750</FundraisingAmt>
      </FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>35589</TotalAmt>
        <ProgramServicesAmt>26734</ProgramServicesAmt>
        <ManagementAndGeneralAmt>5406</ManagementAndGeneralAmt>
        <FundraisingAmt>3449</FundraisingAmt>
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        <ProgramServicesAmt>2765749</ProgramServicesAmt>
        <ManagementAndGeneralAmt>40323</ManagementAndGeneralAmt>
        <FundraisingAmt>144765</FundraisingAmt>
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      <OfficeExpensesGrp>
        <TotalAmt>305955</TotalAmt>
        <ProgramServicesAmt>258456</ProgramServicesAmt>
        <ManagementAndGeneralAmt>45958</ManagementAndGeneralAmt>
        <FundraisingAmt>1541</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>329680</TotalAmt>
        <ProgramServicesAmt>256188</ProgramServicesAmt>
        <ManagementAndGeneralAmt>34989</ManagementAndGeneralAmt>
        <FundraisingAmt>38503</FundraisingAmt>
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      <OccupancyGrp>
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        <ProgramServicesAmt>1487494</ProgramServicesAmt>
        <ManagementAndGeneralAmt>337021</ManagementAndGeneralAmt>
        <FundraisingAmt>265</FundraisingAmt>
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      <TravelGrp>
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        <ProgramServicesAmt>540502</ProgramServicesAmt>
        <ManagementAndGeneralAmt>23398</ManagementAndGeneralAmt>
        <FundraisingAmt>57855</FundraisingAmt>
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      <ConferencesMeetingsGrp>
        <TotalAmt>655523</TotalAmt>
        <ProgramServicesAmt>612237</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7148</ManagementAndGeneralAmt>
        <FundraisingAmt>36138</FundraisingAmt>
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      <InterestGrp>
        <TotalAmt>10311</TotalAmt>
        <ProgramServicesAmt>8396</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1915</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>211868</ProgramServicesAmt>
        <ManagementAndGeneralAmt>48332</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>41913</ProgramServicesAmt>
        <ManagementAndGeneralAmt>9561</ManagementAndGeneralAmt>
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        <Desc>PRINTING AND PUBLICATIO</Desc>
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        <ProgramServicesAmt>97350</ProgramServicesAmt>
        <ManagementAndGeneralAmt>2353</ManagementAndGeneralAmt>
        <FundraisingAmt>18912</FundraisingAmt>
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      <OtherExpensesGrp>
        <Desc>PHOTOGRAPHY AND MEDIA P</Desc>
        <TotalAmt>15170</TotalAmt>
        <ProgramServicesAmt>12048</ProgramServicesAmt>
        <FundraisingAmt>3122</FundraisingAmt>
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      <TotalFunctionalExpensesGrp>
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        <ProgramServicesAmt>12857691</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1013184</ManagementAndGeneralAmt>
        <FundraisingAmt>1011495</FundraisingAmt>
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      <CashNonInterestBearingGrp>
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        <EOYAmt>3345</EOYAmt>
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        <EOYAmt>1478051</EOYAmt>
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      <PledgesAndGrantsReceivableGrp>
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        <EOYAmt>730477</EOYAmt>
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      <AccountsReceivableGrp>
        <BOYAmt>89136</BOYAmt>
        <EOYAmt>341278</EOYAmt>
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        <EOYAmt>34987</EOYAmt>
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        <EOYAmt>1616268</EOYAmt>
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        <EOYAmt>39889787</EOYAmt>
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        <EOYAmt>148579</EOYAmt>
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        <EOYAmt>44242772</EOYAmt>
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      <AccountsPayableAccrExpnssGrp>
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        <EOYAmt>2747197</EOYAmt>
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        <EOYAmt>1016129</EOYAmt>
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      <MortgNotesPyblScrdInvstPropGrp>
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        <EOYAmt>0</EOYAmt>
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      <TotalLiabilitiesGrp>
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        <EOYAmt>3763326</EOYAmt>
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        <EOYAmt>35650504</EOYAmt>
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      <TemporarilyRstrNetAssetsGrp>
        <BOYAmt>2866913</BOYAmt>
        <EOYAmt>4828942</EOYAmt>
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      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>33540510</BOYAmt>
        <EOYAmt>40479446</EOYAmt>
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      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>37521470</BOYAmt>
        <EOYAmt>44242772</EOYAmt>
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      <InfoInScheduleOPartXIInd>X</InfoInScheduleOPartXIInd>
      <ReconcilationRevenueExpnssAmt>4703935</ReconcilationRevenueExpnssAmt>
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      <OtherChangesInNetAssetsAmt>-45838</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <SeparateBasisFinclStmtInd>X</SeparateBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleA documentId="RetDoc1039100001">
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      <GiftsGrantsContriRcvd170Grp>
        <CurrentTaxYearMinus4YearsAmt>12094778</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>11305549</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>18036772</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>7209307</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>17948431</CurrentTaxYearAmt>
        <TotalAmt>66594837</TotalAmt>
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      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>12094778</CurrentTaxYearMinus4YearsAmt>
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        <TitleTxt>DIRECTOR OF STUDIES</TitleTxt>
        <BaseCompensationFilingOrgAmt>163019</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>7583</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>8822</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>179424</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRISTOPHER DEMUTH</PersonNm>
        <TitleTxt>DISTINGUISHED FELLOW</TitleTxt>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>16000</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>26616</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>231163</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>HILLEL FRADKIN</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>18000</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>25609</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>258949</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>WALTER RUSSELL MEAD</PersonNm>
        <TitleTxt>DISTINGUISHED FELLOW</TitleTxt>
        <BaseCompensationFilingOrgAmt>284158</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
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        <NontaxableBenefitsFilingOrgAmt>14436</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>298594</TotalCompensationFilingOrgAmt>
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        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ARTHUR HERMAN</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
        <BaseCompensationFilingOrgAmt>194160</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>0</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19254</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>213414</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MICHAEL DORAN</PersonNm>
        <TitleTxt>SENIOR FELLOW</TitleTxt>
        <BaseCompensationFilingOrgAmt>238665</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>5000</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>12832</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>23546</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>280043</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COMPENSATION COMMITTEE OF THE BOARD DETERMINES THE AMOUNTS OF THE BONUSES GIVEN EACH YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>20</ContributionCnt>
        <NoncashContributionsRptF990Amt>7457157</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>STOCK QUOTE</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>1</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 32B:</FormAndLineReferenceDesc>
        <ExplanationTxt>WELLS FARGO AND MORGAN STANLEY SELL NON-CASH CONTRIBUTIONS OF PUBLICLY TRADED STOCK FOR HUDSON.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>SARAH MAY STERN AND WALTER STERN HAVE A FAMILY RELATIONSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS REVIEWED IN DETAIL BY THE AUDIT AND RISK COMMITTEE, THE PRESIDENT, COO, AND DIRECTOR OF FINANCE, AND IT IS ALSO PROVIDED TO THE FULL BOARD BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY COVERS ALL MEMBERS OF THE BOARD AND ALL OFFICERS. COMPLIANCE WITH THE POLICY IS MONITORED BY THE CORPORATE SECRETARY WHO MAINTAINS THE DISCLOSURE FORMS. EACH YEAR, TRUSTEES AND CORPORATE OFFICERS ARE REQUIRED TO FILL OUT ANNUAL DISCLOSURE FORMS THAT ARE DESIGNED TO ELICIT POTENTIAL CONFLICTS OF INTEREST THAT MAY ARISE THROUGH DEALINGS OR RELATIONSHIPS WITH STAFF MEMBERS, TRUSTEES OR INSTITUTE VENDORS. THESE DISCLOSURES ARE REVIEWED BY THE CORPORATE SECRETARY, THE INSTITUTE PRESIDENT AND THE CHAIRMAN OF THE BOARD. THE BOARD CHAIRMAN REVIEWS EACH TRANSACTION TO COME BEFORE THE BOARD FOR POTENTIAL OR ACTUAL CONFLICTS OF INTEREST. BOARD MEMBERS ARE ASKED TO RECUSE THEMSELVES FROM ANY VOTES THAT MAY ENTAIL A CONFLICT OF INTEREST. ANY IDENTIFIED CONFLICTS OF INTEREST AND APPROPRIATE RECUSALS ARE DOCUMENTED IN THE MINUTES OF EACH BOARD OR COMMITTEE MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS FOR DETERMINING COMPENSATION OF ALL OFFICERS AND KEY EMPLOYEES INCLUDES A REVIEW AND APPROVAL BY INDEPENDENT MEMBERS OF THE COMPENSATION COMMITTEE. COMPARABILITY DATA USED IN THE REVIEW PROCESS IS OBTAINED FROM THE FORM 990 OF OTHER ORGANIZATIONS. THE DELIBERATIONS AND DECISIONS ARE DOCUMENTED IN THE MINUTES OF THE BOARD. THE COMPENSATION DETERMINATION PROCESS IS PERFORMED ON AN ANNUAL BASIS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART IX, LINE 11G</FormAndLineReferenceDesc>
        <ExplanationTxt>CONSULTANTS/SUBCONTRACTORS: PROGRAM SERVICE EXPENSES 2,746,325. MANAGEMENT AND GENERAL EXPENSES 40,323. FUNDRAISING EXPENSES 144,765. TOTAL EXPENSES 2,931,413. EDITING/BOOK PUBLISHING: PROGRAM SERVICE EXPENSES 19,424. MANAGEMENT AND GENERAL EXPENSES 0. FUNDRAISING EXPENSES 0. TOTAL EXPENSES 19,424.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>UNCOLLECTIBLE A/R -45,838.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 PART XII LINE 2C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS HAS NOT CHANGED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043500001">
      <IdRelatedOrgTxblCorpTrGrp>
        <RelatedOrganizationName>
          <BusinessNameLine1Txt>HUDSON ANALYTICAL SERVICES INC</BusinessNameLine1Txt>
        </RelatedOrganizationName>
        <USAddress>
          <AddressLine1Txt>1201 PENNSYLVANIA AVE NW NO400</AddressLine1Txt>
          <CityNm>WASHINGTON</CityNm>
          <StateAbbreviationCd>DC</StateAbbreviationCd>
          <ZIPCd>20004</ZIPCd>
        </USAddress>
        <EIN>351645201</EIN>
        <PrimaryActivitiesTxt>RESEARCH</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>NY</LegalDomicileStateCd>
        <EntityTypeTxt>C</EntityTypeTxt>
        <OwnershipPct>1.00000</OwnershipPct>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedOrgTxblCorpTrGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
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  </ReturnData>
</Return>