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        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>AMY LOUIS</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHARLES P MCQUAID</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>TIMOTHY M MURRAY</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>HENRY B PEARSALL</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>W ROBERT REUM</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT J SCHILLERSTROM</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>STEPHEN C VAN ARSDELL</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ROBERT S WASSERMAN</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOSEPH L WEIDENBACH</PersonNm>
        <TitleTxt>TRUSTEE</TitleTxt>
        <AverageHoursPerWeekRt>8.00</AverageHoursPerWeekRt>
        <IndividualTrusteeOrDirectorInd>X</IndividualTrusteeOrDirectorInd>
        <ReportableCompFromOrgAmt>0</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>0</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GERARD T DONNELLY PHD</PersonNm>
        <TitleTxt>PRESIDENT AND CEO</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>354706</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>75679</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JAMES S FAWLEY</PersonNm>
        <TitleTxt>VP OF FINANCE AND CFO</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>164008</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>17458</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JILL KOSKI</PersonNm>
        <TitleTxt>VP OF DEVELOPMENT</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>194961</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>34380</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SUSAN WAGNER</PersonNm>
        <TitleTxt>VP OF EDUCATION AND INFORMATION</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>158387</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>10343</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JENNIFER GOODSMITH</PersonNm>
        <TitleTxt>VP OF MARKETING</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>146547</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>28746</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KRIS BACHTELL</PersonNm>
        <TitleTxt>VP OF COLLECTIONS AND FACILITIES</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>143369</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>49560</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NICOLE CAVENDER</PersonNm>
        <TitleTxt>VP OF SCIENCE AND CONSERVATION</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <OfficerInd>X</OfficerInd>
        <ReportableCompFromOrgAmt>136402</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>27666</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>KELLY VANTINE</PersonNm>
        <TitleTxt>MAJOR GIFTS OFFICER</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>118922</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>19050</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD HOOTMAN</PersonNm>
        <TitleTxt>DIRECTOR OF VISITOR SERVICES</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>112760</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>23052</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>GARY WATSON</PersonNm>
        <TitleTxt>HEAD OF RESEARCH</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>109948</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>42777</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>SAI RAVICHANDRAN</PersonNm>
        <TitleTxt>DIRECTOR OF INFORMATION TECHNOLOGY</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>111218</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>6731</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>RALPH GRIECO</PersonNm>
        <TitleTxt>HEAD OF FACILITIES</TitleTxt>
        <AverageHoursPerWeekRt>40.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>100471</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>8219</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>1851699</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>343661</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>12</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>INTELLIGENT LIGHTING CREATIONS</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>2461 E OAKTON ST</AddressLine1Txt>
            <CityNm>ARLINGTON HEIGHTS</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60005</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>EVENT LIGHTING PRODUCTION</ServicesDesc>
        <CompensationAmt>625252</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ARAMARK CORPORATION</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1101 MARKET ST</AddressLine1Txt>
            <CityNm>PHILADELPHIA</CityNm>
            <StateAbbreviationCd>PA</StateAbbreviationCd>
            <ZIPCd>19107</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>FOOD SERVICE MANAGEMENT</ServicesDesc>
        <CompensationAmt>538039</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>KELLY SCOTT &amp; MADISON</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>35 E WACKER DRIVE</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60601</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>ADVERTISING</ServicesDesc>
        <CompensationAmt>465750</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>BUCK SERVICES INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>256 W ROOSEVELT RD</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60185</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>JANITORIAL</ServicesDesc>
        <CompensationAmt>347504</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>LUKASIK &amp; ASSOCIATES</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1044 WESTERN AVE</AddressLine1Txt>
            <CityNm>FLOSSMOOR</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60422</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>CONSTRUCTION DESIGN &amp; MGMT</ServicesDesc>
        <CompensationAmt>343924</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>19</CntrctRcvdGreaterThan100KCnt>
      <MembershipDuesAmt>3634215</MembershipDuesAmt>
      <FundraisingAmt>204267</FundraisingAmt>
      <GovernmentGrantsAmt>531381</GovernmentGrantsAmt>
      <AllOtherContributionsAmt>10329034</AllOtherContributionsAmt>
      <NoncashContributionsAmt>2114114</NoncashContributionsAmt>
      <TotalContributionsAmt>14698897</TotalContributionsAmt>
      <ProgramServiceRevenueGrp>
        <Desc>VISITOR EVENTS</Desc>
        <BusinessCd>713990</BusinessCd>
        <TotalRevenueColumnAmt>2565264</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>2565264</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>ADMISSIONS</Desc>
        <BusinessCd>713990</BusinessCd>
        <TotalRevenueColumnAmt>1139319</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1139319</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>EDUCATION</Desc>
        <BusinessCd>713990</BusinessCd>
        <TotalRevenueColumnAmt>857280</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>857280</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>4561863</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>6513649</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>-72847</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>6586496</ExclusionAmt>
      </InvestmentIncomeGrp>
      <GrossRentsGrp>
        <RealAmt>748930</RealAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>0</RealAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>748930</RealAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>748930</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>748930</RelatedOrExemptFuncIncomeAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>62651954</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>39092708</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>23559246</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>23559246</TotalRevenueColumnAmt>
        <ExclusionAmt>23559246</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <FundraisingGrossIncomeAmt>28400</FundraisingGrossIncomeAmt>
      <ContriRptFundraisingEventAmt>204267</ContriRptFundraisingEventAmt>
      <FundraisingDirectExpensesAmt>109713</FundraisingDirectExpensesAmt>
      <NetIncmFromFundraisingEvtGrp>
        <TotalRevenueColumnAmt>-81313</TotalRevenueColumnAmt>
        <ExclusionAmt>-81313</ExclusionAmt>
      </NetIncmFromFundraisingEvtGrp>
      <GrossSalesOfInventoryAmt>6586607</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>2259976</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>4326631</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>4326631</RelatedOrExemptFuncIncomeAmt>
      </NetIncomeOrLossGrp>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>54327903</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>9637424</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>-72847</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>30064429</ExclusionAmt>
      </TotalRevenueGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>1488773</TotalAmt>
        <ProgramServicesAmt>683982</ProgramServicesAmt>
        <ManagementAndGeneralAmt>573315</ManagementAndGeneralAmt>
        <FundraisingAmt>231476</FundraisingAmt>
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        <TotalAmt>10782791</TotalAmt>
        <ProgramServicesAmt>8341659</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1208949</ManagementAndGeneralAmt>
        <FundraisingAmt>1232183</FundraisingAmt>
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      <PensionPlanContributionsGrp>
        <TotalAmt>620499</TotalAmt>
        <ProgramServicesAmt>480024</ProgramServicesAmt>
        <ManagementAndGeneralAmt>69569</ManagementAndGeneralAmt>
        <FundraisingAmt>70906</FundraisingAmt>
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      <OtherEmployeeBenefitsGrp>
        <TotalAmt>2377158</TotalAmt>
        <ProgramServicesAmt>1838990</ProgramServicesAmt>
        <ManagementAndGeneralAmt>266523</ManagementAndGeneralAmt>
        <FundraisingAmt>271645</FundraisingAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>894143</TotalAmt>
        <ProgramServicesAmt>691716</ProgramServicesAmt>
        <ManagementAndGeneralAmt>100251</ManagementAndGeneralAmt>
        <FundraisingAmt>102176</FundraisingAmt>
      </PayrollTaxesGrp>
      <FeesForServicesManagementGrp>
        <TotalAmt>257182</TotalAmt>
        <ProgramServicesAmt>257182</ProgramServicesAmt>
      </FeesForServicesManagementGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>70493</TotalAmt>
        <ManagementAndGeneralAmt>70493</ManagementAndGeneralAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>395071</TotalAmt>
        <ProgramServicesAmt>152238</ProgramServicesAmt>
        <ManagementAndGeneralAmt>148092</ManagementAndGeneralAmt>
        <FundraisingAmt>94741</FundraisingAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>12000</TotalAmt>
        <ManagementAndGeneralAmt>12000</ManagementAndGeneralAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForServicesProfFundraising>
        <TotalAmt>74873</TotalAmt>
        <FundraisingAmt>74873</FundraisingAmt>
      </FeesForServicesProfFundraising>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>219178</TotalAmt>
        <ProgramServicesAmt>219178</ProgramServicesAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>2574327</TotalAmt>
        <ProgramServicesAmt>2009110</ProgramServicesAmt>
        <ManagementAndGeneralAmt>78035</ManagementAndGeneralAmt>
        <FundraisingAmt>487182</FundraisingAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>566689</TotalAmt>
        <ProgramServicesAmt>549871</ProgramServicesAmt>
        <ManagementAndGeneralAmt>8716</ManagementAndGeneralAmt>
        <FundraisingAmt>8102</FundraisingAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>3402256</TotalAmt>
        <ProgramServicesAmt>2855100</ProgramServicesAmt>
        <ManagementAndGeneralAmt>70059</ManagementAndGeneralAmt>
        <FundraisingAmt>477097</FundraisingAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>279648</TotalAmt>
        <ManagementAndGeneralAmt>279648</ManagementAndGeneralAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>1771228</TotalAmt>
        <ProgramServicesAmt>1758773</ProgramServicesAmt>
        <ManagementAndGeneralAmt>12455</ManagementAndGeneralAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>168890</TotalAmt>
        <ProgramServicesAmt>145455</ProgramServicesAmt>
        <ManagementAndGeneralAmt>7480</ManagementAndGeneralAmt>
        <FundraisingAmt>15955</FundraisingAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>269022</TotalAmt>
        <ProgramServicesAmt>74327</ProgramServicesAmt>
        <ManagementAndGeneralAmt>60867</ManagementAndGeneralAmt>
        <FundraisingAmt>133828</FundraisingAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>262033</TotalAmt>
        <ProgramServicesAmt>262033</ProgramServicesAmt>
      </InterestGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>2655800</TotalAmt>
        <ProgramServicesAmt>2562323</ProgramServicesAmt>
        <ManagementAndGeneralAmt>92141</ManagementAndGeneralAmt>
        <FundraisingAmt>1336</FundraisingAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>349855</TotalAmt>
        <ProgramServicesAmt>349855</ProgramServicesAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>CONTRACT HELP</Desc>
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        <ProgramServicesAmt>1835750</ProgramServicesAmt>
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        <TotalAmt>44723447</TotalAmt>
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      <PublicSupportTotal170Amt>43399192</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
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        <CurrentTaxYearMinus3YearsAmt>10988498</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>7018176</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>5675777</CurrentTaxYearMinus1YearAmt>
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        <TotalAmt>39065822</TotalAmt>
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      <PublicSupportPY170Pct>0.44620</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
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        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
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      <MailingsMembersInd>0</MailingsMembersInd>
      <PublicationsOrBroadcastInd>0</PublicationsOrBroadcastInd>
      <GrantsOtherOrganizationsInd>0</GrantsOtherOrganizationsInd>
      <DirectContactLegislatorsInd>0</DirectContactLegislatorsInd>
      <RalliesDemonstrationsInd>0</RalliesDemonstrationsInd>
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      <TotalLobbyingExpendituresAmt>12000</TotalLobbyingExpendituresAmt>
      <NotDescribedSection501c3Ind>0</NotDescribedSection501c3Ind>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART II-B, LINE 1:</FormAndLineReferenceDesc>
        <ExplanationTxt>A CONSULTANT WAS HIRED TO INVESTIGATE POSSIBLE AVAILABLE SOURCES OF FUNDING ON THE STATE GOVERNMENT LEVEL.</ExplanationTxt>
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    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <CollUsedLoanOrExchProgInd>X</CollUsedLoanOrExchProgInd>
      <CollectionUsedOtherPurposesGrp>
        <CollectionUsedOtherPurposesInd>X</CollectionUsedOtherPurposesInd>
        <OtherPurposesDesc>CLASSROOM EDUCATION</OtherPurposesDesc>
      </CollectionUsedOtherPurposesGrp>
      <SolicitedAssetsSaleInd>0</SolicitedAssetsSaleInd>
      <CYEndwmtFundGrp>
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        <ContributionsAmt>4190026</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>394002</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>1555956</OtherExpendituresAmt>
        <EndYearBalanceAmt>20214087</EndYearBalanceAmt>
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        <ContributionsAmt>4536411</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>1179395</InvestmentEarningsOrLossesAmt>
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        <EndYearBalanceAmt>17186015</EndYearBalanceAmt>
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        <InvestmentEarningsOrLossesAmt>1171524</InvestmentEarningsOrLossesAmt>
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        <EndYearBalanceAmt>11965668</EndYearBalanceAmt>
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        <EndYearBalanceAmt>10174314</EndYearBalanceAmt>
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        <OtherExpendituresAmt>141910</OtherExpendituresAmt>
        <EndYearBalanceAmt>10212513</EndYearBalanceAmt>
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        <BookValueAmt>19603057</BookValueAmt>
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        <BookValueAmt>14034653</BookValueAmt>
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      <OtherSecuritiesGrp>
        <Desc>REAL ESTATE -GUGGENHEIM</Desc>
        <BookValueAmt>8698783</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
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      <OtherSecuritiesGrp>
        <Desc>PRIVATE EQUITY - MADISON DEARBORN</Desc>
        <BookValueAmt>5052386</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>HEDGE FUND - WEATHERLOW</Desc>
        <BookValueAmt>27522421</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
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      <OtherSecuritiesGrp>
        <Desc>PRIVATE EQUITY - ADAM ST PARTNERS</Desc>
        <BookValueAmt>5707187</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <OtherSecuritiesGrp>
        <Desc>PRIVATE EQUITY - BEAR STEARNS</Desc>
        <BookValueAmt>41948</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>47022725</TotalBookValueSecuritiesAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>31733124</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>-24745290</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>-24745290</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>56478414</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>219178</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>-2369689</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>-2150511</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>54327903</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>33875651</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>2369689</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>2369689</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>31505962</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>219178</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>219178</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>31725140</TotalExpensesPerForm990Amt>
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        <FormAndLineReferenceDesc>PART III, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>CAPITALIZATION POLICY: ARBORETUM COLLECTIONS - THE ARBORETUM'S RARE BOOKS AND PRINT COLLECTIONS ARE NOT CAPITALIZED IN THE ACCOMPANYING AUDITED FINANCIAL STATEMENTS. LIVING WOODY PLANTS ARE ALSO NOT CAPITALIZED UNLESS THEY ARE A MAJOR PART OF A CAPITAL PROJECT. PURCHASES OF COLLECTION ITEMS THAT ARE NOT CAPITALIZED ARE RECORDED AS DECREASES IN UNRESTRICTED NET ASSETS.</ExplanationTxt>
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      <SupplementalInformationDetail>
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        <ExplanationTxt>DESCRIPTION OF COLLECTIONS AND FURTHERANCE OF EXEMPT PURPOSE: LIVING COLLECTION - WOODY PLANTS IN CATEGORIES OF TAXONOMIC, GEOGRAPHIC, SPECIAL HABITAT, HORTICULTURAL, RARE/ENDANGERED. 190,000 SPECIMENS REPRESENT 4,200 DIFFERENT KINDS OF TREES, SHRUBS AND OTHER PLANTS FROM 40 COUNTRIES IN THE NORTHERN TEMPERATE ZONE. DISPLAYED ACROSS 1,700 ACRES OF NATURAL LANDSCAPES. PROVIDED FOR BOTANICAL, HORTICULTURAL, AND ARTISTIC STUDY (EDUCATION AND RESEARCH PURPOSE) AND ENJOYMENT OF PLANT SPECIES (SPECIFIC RESEARCH PURPOSE). LIBRARY COLLECTION - 27,000 VOLUMES OF BOTANY, HORTICULTURE, LANDSCAPE DESIGN, NATURAL HISTORY, ECOLOGY; CORRESPONDING RARE DOCUMENTS, AND OTHER PRINTED MATERIALS; 12,000 BOTANICAL ARTWORKS AND 3,400 LANDSCAPE DRAWINGS. AVAILABLE FOR BOTANICAL, HORTICULTURAL, AND ARTISTIC STUDY OF PLANTS (EDUCATIONAL, RESEARCH, AND CULTURAL PURPOSES).</ExplanationTxt>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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        <FoodAndBeverageTotalEventsAmt>30936</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>3100</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>10370</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>109713</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-81313</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="RetDoc1042400001">
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      <HousingAllowanceOrResidenceInd>X</HousingAllowanceOrResidenceInd>
      <WrittenPolicyRefTAndEExpnssInd>1</WrittenPolicyRefTAndEExpnssInd>
      <SubstantiationRequiredInd>1</SubstantiationRequiredInd>
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>0</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>0</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>0</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>0</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>1</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>0</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>GERARD T DONNELLY PHD</PersonNm>
        <TitleTxt>PRESIDENT AND CEO</TitleTxt>
        <BaseCompensationFilingOrgAmt>304544</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>26083</BonusFilingOrganizationAmount>
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        <OtherCompensationFilingOrgAmt>24079</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>45928</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>20394</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>421028</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JAMES S FAWLEY</PersonNm>
        <TitleTxt>VP OF FINANCE AND CFO</TitleTxt>
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        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
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        <TotalCompensationFilingOrgAmt>181466</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JILL KOSKI</PersonNm>
        <TitleTxt>VP OF DEVELOPMENT</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>3971</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>12559</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>21821</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>229341</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>SUSAN WAGNER</PersonNm>
        <TitleTxt>VP OF EDUCATION AND INFORMATION</TitleTxt>
        <BaseCompensationFilingOrgAmt>155313</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>3074</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>9343</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>1000</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>168730</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JENNIFER GOODSMITH</PersonNm>
        <TitleTxt>VP OF MARKETING</TitleTxt>
        <BaseCompensationFilingOrgAmt>143610</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>2937</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>8925</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19821</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>175293</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KRIS BACHTELL</PersonNm>
        <TitleTxt>VP OF COLLECTIONS AND FACILITIES</TitleTxt>
        <BaseCompensationFilingOrgAmt>140451</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>2918</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>24830</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>21721</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>189920</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NICOLE CAVENDER</PersonNm>
        <TitleTxt>VP OF SCIENCE AND CONSERVATION</TitleTxt>
        <BaseCompensationFilingOrgAmt>133648</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>2754</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>8354</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>19312</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>164068</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION OF THE PRESIDENT AND CEO OF THE ARBORETUM, CURRENTLY GERARD T. DONNELLY, INCLUDES AN EDUCATIONAL ALLOWANCE FOR COLLEGE UNDERGRADUATE TUITION AND FEES FOR HIS CHILDREN. CHARGES RELATED TO ROOM AND BOARD ARE NOT COVERED. REIMBURSEMENT IS NET OF ANY SCHOLARSHIP AMOUNT. THE REIMBURSEMENT IS ON A TAX INDEMNIFICATION AND GROSS-UP BASIS AND TREATED AS TAXABLE COMPENSATION. THIS IS A BENEFIT AS PROVIDED FOR IN THE EMPLOYMENT AGREEMENT UPON HIRE. AN ON-SITE RESIDENCE IS PROVIDED FOR THE PRESIDENT AND CEO OF THE ARBORETUM, CURRENTLY GERARD T. DONNELLY, AS A CONDITION OF EMPLOYMENT AND FOR THE CONVENIENCE OF THE ARBORETUM. THE VALUE OF THIS RESIDENCE IS NOT TREATED AS TAXABLE COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 7</FormAndLineReferenceDesc>
        <ExplanationTxt>A DISCRETIONARY BONUS BASED ON PERFORMANCE OF $20,000 WAS PAID TO THE CEO IN 2014. IN 2014, PAYMENT OF ALL PAYROLL WAS MOVED TO ONE WEEK IN ARREARS FROM THE PRIOR POLICY OF PAYING CURRENT. ALL FULL TIME EMPLOYEES INCLUDING THOSE LISTED ON SCHEDULE J RECEIVED A BONUS EQUIVALENT TO ONE WEEK OF THEIR ANNUAL SALARIES TO ENSURE THE TOTAL ANNUAL SALARY WAS PAID IN 2014.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleJ>
    <IRS990ScheduleK documentId="RetDoc1053100001">
      <TaxExemptBondsIssuesGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <IssuerName>
          <BusinessNameLine1Txt>THE COUNTY OF DUPAGE ILLINOIS</BusinessNameLine1Txt>
        </IssuerName>
        <BondIssuerEIN>366006551</BondIssuerEIN>
        <CUSIPNum>262668ACO</CUSIPNum>
        <BondIssuedDt>2003-12-17</BondIssuedDt>
        <IssuePriceAmt>42000000</IssuePriceAmt>
        <PurposeDesc>SEE PART VI</PurposeDesc>
        <DefeasedInd>0</DefeasedInd>
        <OnBehalfOfIssuerInd>0</OnBehalfOfIssuerInd>
        <PoolFinancingInd>0</PoolFinancingInd>
      </TaxExemptBondsIssuesGrp>
      <TaxExemptBondsProceedsGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <TotalProceedsAmt>42155070</TotalProceedsAmt>
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        <WorkingCapitalExpendituresAmt>1482400</WorkingCapitalExpendituresAmt>
        <CapitalExpendituresAmt>40346420</CapitalExpendituresAmt>
        <SubstantialCompletionYr>2005</SubstantialCompletionYr>
        <CurrentRefundingInd>0</CurrentRefundingInd>
        <AdvanceRefundingInd>0</AdvanceRefundingInd>
        <FinalAllocationMadeInd>1</FinalAllocationMadeInd>
        <AdequateBooksAndRecMaintInd>1</AdequateBooksAndRecMaintInd>
      </TaxExemptBondsProceedsGrp>
      <TaxExemptBondsPrivateBusUseGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <OwningBondFinancedPropertyInd>0</OwningBondFinancedPropertyInd>
        <AnyLeaseArrangementsInd>0</AnyLeaseArrangementsInd>
        <MgmtContractBondFincdPropInd>0</MgmtContractBondFincdPropInd>
        <AnyResearchAgreementsInd>0</AnyResearchAgreementsInd>
        <BondIssMeetPrvtSecPymtTestInd>0</BondIssMeetPrvtSecPymtTestInd>
        <ChangeInUseBondFinancedPropInd>0</ChangeInUseBondFinancedPropInd>
        <ProcsNonqualifiedBondRemdtdInd>1</ProcsNonqualifiedBondRemdtdInd>
      </TaxExemptBondsPrivateBusUseGrp>
      <TaxExemptBondsArbitrageGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <Form8038TFiledInd>0</Form8038TFiledInd>
        <RebateNotDueYetInd>0</RebateNotDueYetInd>
        <ExceptionToRebateInd>1</ExceptionToRebateInd>
        <NoRebateDueInd>0</NoRebateDueInd>
        <VariableRateIssueInd>1</VariableRateIssueInd>
        <HedgeIdentifiedInBksAndRecInd>0</HedgeIdentifiedInBksAndRecInd>
        <GrossProceedsInvestedInGICInd>1</GrossProceedsInvestedInGICInd>
        <GICProviderName>
          <BusinessNameLine1Txt>CITIGROUP GLOBAL</BusinessNameLine1Txt>
        </GICProviderName>
        <TermOfGICPct>1.500000000000</TermOfGICPct>
        <RegulatorySafeHarborStsfdInd>1</RegulatorySafeHarborStsfdInd>
        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
        <WrittenProcToMonitorReqsInd>0</WrittenProcToMonitorReqsInd>
      </TaxExemptBondsArbitrageGrp>
      <ProceduresCorrectiveActionGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <ProceduresCorrectiveActionInd>0</ProceduresCorrectiveActionInd>
      </ProceduresCorrectiveActionGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE K, PART I, LINE A, COLUMN F</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCEEDS OF THE BONDS WERE USED FOR (I) THE COSTS OF CERTAIN CAPITAL IMPROVEMENTS TO THE FACILITIES OF THE BORROWER LOCATED IN LISLE, ILLINOIS, INCLUDING (A) THE CONSTRUCTION OF A VISITOR CENTER AND TRAM ROAD; (B) VISITOR FACILITIES AND A PRAIRIE VISITOR STATION, (C) THE EXPANSION AND IMPROVEMENT OF THE MAIN ENTRANCE TO THE MORTON ARBORETUM, (D) THE RESTORATION OF THE RIVERBANK, (E) THE CONSTRUCTION OF PARKING LOTS AND SUPPORT FACILITIES, (F) THE CONSTRUCTION OF A CHILDREN'S GARDEN, MAZE GARDEN, ARBOR COURT AND MEADOW LAKE COURTYARD FACILITIES AND (G) LANDSCAPING, STORM WATER FACILITY AND RELATED IMPROVEMENTS, (II) PAYING A PORTION OF THE INTEREST TO ACCRUE ON THE BONDS AND (III) PAYING A PORTION OF CERTAIN EXPENSES INCURRED IN CONNECTION WITH THE ISSUANCE OF THE BONDS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE K, PART IV, LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>NO, THERE WAS NO ARBITRAGE REBATE OR PENALTY DUE. THE NET REBATE LIABILITY WAS NEGATIVE.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleK>
    <IRS990ScheduleL documentId="RetDoc1042800001">
      <BusTrInvolveInterestedPrsnGrp>
        <NameOfInterested>
          <BusinessName>
            <BusinessNameLine1Txt>CHRISTOPHER B BURKE</BusinessNameLine1Txt>
          </BusinessName>
        </NameOfInterested>
        <RelationshipDescriptionTxt>TRUSTEE</RelationshipDescriptionTxt>
        <TransactionAmt>194746</TransactionAmt>
        <TransactionDesc>ENGINEERING - DURING 2014, THE ARBORETUM USED CHRISTOPHER BURKE ENGINEERING AND WILL, BURKE &amp; KELSEY FOR ENGINEERING AND CONSULTING SERVICES. CHRISTOPHER L. BURKE, TRUSTEE, HAS AN OWNERSHIP INTEREST IN BOTH FIRMS. THESE TRANSACTIONS FOLLOWED THE ARBORETUM'S ESTABLISHED PROCUREMENT POLICY AND RATES ARE COMPETITIVE WITH MARKET RATES.</TransactionDesc>
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    </IRS990ScheduleL>
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        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>22</ContributionCnt>
        <NoncashContributionsRptF990Amt>2107464</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>AWARDS</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>6000</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>POTTING SOIL</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>650</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, COLUMN (B):</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS REPORTING IN PART I, COLUMN (B), THE NUMBER OF CONTRIBUTIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 3</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ARBORETUM CONTRACTS WITH ARAMARK CORPORATION TO MANAGE AND OPERATE FOOD SERVICES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS PREPARED BY THE ARBORETUM'S ACCOUNTANTS, REVIEWED BY THE AUDIT COMMITTEE AND DISTRIBUTED TO THE BOARD OF TRUSTEES PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MORTON ARBORETUM REQUIRES THAT ALL TRUSTEES, EMPLOYEES, AND VOLUNTEERS DISCLOSE AND DECLARE ANY PERSONAL, FAMILIAL, OR BUSINESS RELATIONSHIPS, SITUATIONS, OR ACTIVITIES THAT HAVE THE POTENTIAL TO CREATE A CONFLICT OF INTEREST OR THE PERCEPTION OF A CONFLICT OF INTEREST. FOR TRUSTEES AND EMPLOYEES, THE DECLARATION MUST BE RENEWED ANNUALLY OR WHEN APPLICABLE CHANGES IN STATUS OCCUR. THE ARBORETUM SUPPLIES A CONFLICT OF INTEREST DECLARATION FORM TO ALL TRUSTEES AND EMPLOYEES FOR THIS PURPOSE. VOLUNTEERS ARE INFORMED OF THIS POLICY AT THE ONSET OF THEIR SERVICE, IN THE PUBLISHED VOLUNTEER HANDBOOK, AND IN PERIODIC COMMUNICATIONS. FOR ALL TRUSTEES, EMPLOYEES, AND VOLUNTEERS, RELATIONSHIPS OR SITUATIONS THAT ARISE THAT MAY CREATE OR APPEAR TO CREATE CONFLICT OF INTEREST MUST BE BROUGHT TO THE ATTENTION OF THE PRESIDENT OR THE CHAIRMAN OF THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE PROCESS FOR DETERMINING COMPENSATION OF OFFICERS AND KEY EMPLOYEES INCLUDES A MARKET ANALYSIS OF COMPARABLE POSITIONS FROM PEER GARDENS AND OTHER SIMILAR ORGANIZATIONS FOR BENCHMARKING PURPOSES. THIS INFORMATION IS REVIEWED BY INTERNAL HUMAN RESOURCES PROFESSIONALS AND THE MANAGEMENT DEVELOPMENT AND COMPENSATION COMMITTEE OF THE BOARD OF TRUSTEES. THE FULL BOARD REVIEWS AND APPROVES RECOMMENDATIONS OF COMPENSATION MATTERS FOR THE PRESIDENT AND CEO. THE COMPENSATION OF OTHER OFFICERS AND KEY EMPLOYEES IS REVIEWED BY THE COMPENSATION COMMITTEE OF THE BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC ON THE ARBORETUM'S WEBSITE (WWW.MORTONARB.ORG) AND ANNUAL REPORT. GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY ARE AVAILABLE UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>