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        <TitleTxt>DIRECTOR OF HUMAN RESOURCES</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>142239</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>6142</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>NATHAN MICK</PersonNm>
        <TitleTxt>DIRECTOR OF ADVOCACY</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>187309</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>46773</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BRANDON HACKWORTH</PersonNm>
        <TitleTxt>VP OF GOVERNANCE AND MEMBERSHIP</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>124173</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>49247</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LAURA SCHULTZ</PersonNm>
        <TitleTxt>NETWORK MANAGER</TitleTxt>
        <AverageHoursPerWeekRt>45.00</AverageHoursPerWeekRt>
        <HighestCompensatedEmployeeInd>X</HighestCompensatedEmployeeInd>
        <ReportableCompFromOrgAmt>133918</ReportableCompFromOrgAmt>
        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
        <OtherCompensationAmt>51603</OtherCompensationAmt>
      </Form990PartVIISectionAGrp>
      <TotalReportableCompFromOrgAmt>2885364</TotalReportableCompFromOrgAmt>
      <TotReportableCompRltdOrgAmt>0</TotReportableCompRltdOrgAmt>
      <TotalOtherCompensationAmt>456045</TotalOtherCompensationAmt>
      <IndivRcvdGreaterThan100KCnt>11</IndivRcvdGreaterThan100KCnt>
      <FormerOfcrEmployeesListedInd>0</FormerOfcrEmployeesListedInd>
      <TotalCompGreaterThan150KInd>1</TotalCompGreaterThan150KInd>
      <CompensationFromOtherSrcsInd>0</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>GOOGLE INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1600 AMPITHEATRE PARKWAY</AddressLine1Txt>
            <CityNm>MOUNTAIN VIEW</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94043</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>SOCIAL MEDIA</ServicesDesc>
        <CompensationAmt>3128722</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>FREEMAN</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 734596</AddressLine1Txt>
            <CityNm>DALLAS</CityNm>
            <StateAbbreviationCd>TX</StateAbbreviationCd>
            <ZIPCd>753734596</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>AUDIO VISUAL</ServicesDesc>
        <CompensationAmt>1740978</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>META PLATFORMS INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1601 WILLOW RD</AddressLine1Txt>
            <CityNm>MENLO PARK</CityNm>
            <StateAbbreviationCd>CA</StateAbbreviationCd>
            <ZIPCd>94025</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>SOCIAL MEDIA</ServicesDesc>
        <CompensationAmt>1317190</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>PRA EVENTS INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>ONE NORTH LASALLE STREET</AddressLine1Txt>
            <CityNm>CHICAGO</CityNm>
            <StateAbbreviationCd>IL</StateAbbreviationCd>
            <ZIPCd>60602</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>TRANSPORTATION/DECORATION</ServicesDesc>
        <CompensationAmt>774363</CompensationAmt>
      </ContractorCompensationGrp>
      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>ELSEVIER INC</BusinessNameLine1Txt>
          </BusinessName>
        </ContractorName>
        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 9546</AddressLine1Txt>
            <CityNm>NEW YORK</CityNm>
            <StateAbbreviationCd>NY</StateAbbreviationCd>
            <ZIPCd>100874546</ZIPCd>
          </USAddress>
        </ContractorAddress>
        <ServicesDesc>PUBLISHING/ADVERTISING</ServicesDesc>
        <CompensationAmt>621515</CompensationAmt>
      </ContractorCompensationGrp>
      <CntrctRcvdGreaterThan100KCnt>26</CntrctRcvdGreaterThan100KCnt>
      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP DUES AND FEES</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>12410960</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>12410960</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>ANNUAL MEETINGS</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>8067101</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>8067101</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>EDUCATIONAL PROGRAMS</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>1280689</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>1280689</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>PUBLICATIONS</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>316826</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>316826</RelatedOrExemptFuncIncomeAmt>
      </ProgramServiceRevenueGrp>
      <ProgramServiceRevenueGrp>
        <Desc>AAO BULLETIN</Desc>
        <BusinessCd>541800</BusinessCd>
        <TotalRevenueColumnAmt>75570</TotalRevenueColumnAmt>
        <UnrelatedBusinessRevenueAmt>75570</UnrelatedBusinessRevenueAmt>
      </ProgramServiceRevenueGrp>
      <TotalProgramServiceRevenueAmt>22151146</TotalProgramServiceRevenueAmt>
      <InvestmentIncomeGrp>
        <TotalRevenueColumnAmt>906427</TotalRevenueColumnAmt>
        <ExclusionAmt>906427</ExclusionAmt>
      </InvestmentIncomeGrp>
      <RoyaltiesRevenueGrp>
        <TotalRevenueColumnAmt>1255111</TotalRevenueColumnAmt>
        <ExclusionAmt>1255111</ExclusionAmt>
      </RoyaltiesRevenueGrp>
      <GrossRentsGrp>
        <RealAmt>255079</RealAmt>
      </GrossRentsGrp>
      <LessRentalExpensesGrp>
        <RealAmt>270271</RealAmt>
      </LessRentalExpensesGrp>
      <RentalIncomeOrLossGrp>
        <RealAmt>-15192</RealAmt>
      </RentalIncomeOrLossGrp>
      <NetRentalIncomeOrLossGrp>
        <TotalRevenueColumnAmt>-15192</TotalRevenueColumnAmt>
        <ExclusionAmt>-15192</ExclusionAmt>
      </NetRentalIncomeOrLossGrp>
      <GrossAmountSalesAssetsGrp>
        <SecuritiesAmt>13688928</SecuritiesAmt>
      </GrossAmountSalesAssetsGrp>
      <LessCostOthBasisSalesExpnssGrp>
        <SecuritiesAmt>13107010</SecuritiesAmt>
      </LessCostOthBasisSalesExpnssGrp>
      <GainOrLossGrp>
        <SecuritiesAmt>581918</SecuritiesAmt>
      </GainOrLossGrp>
      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>581918</TotalRevenueColumnAmt>
        <ExclusionAmt>581918</ExclusionAmt>
      </NetGainOrLossInvestmentsGrp>
      <GrossSalesOfInventoryAmt>-213644</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>99941</CostOfGoodsSoldAmt>
      <NetIncomeOrLossGrp>
        <TotalRevenueColumnAmt>-313585</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>-313585</RelatedOrExemptFuncIncomeAmt>
      </NetIncomeOrLossGrp>
      <OtherRevenueMiscGrp>
        <Desc>OTHER REVENUE</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>37453</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>37453</RelatedOrExemptFuncIncomeAmt>
      </OtherRevenueMiscGrp>
      <OtherRevenueTotalAmt>37453</OtherRevenueTotalAmt>
      <TotalRevenueGrp>
        <TotalRevenueColumnAmt>24603278</TotalRevenueColumnAmt>
        <RelatedOrExemptFuncIncomeAmt>21799444</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>75570</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>2728264</ExclusionAmt>
      </TotalRevenueGrp>
      <GrantsToDomesticOrgsGrp>
        <TotalAmt>82000</TotalAmt>
      </GrantsToDomesticOrgsGrp>
      <GrantsToDomesticIndividualsGrp>
        <TotalAmt>210000</TotalAmt>
      </GrantsToDomesticIndividualsGrp>
      <CompCurrentOfcrDirectorsGrp>
        <TotalAmt>2292353</TotalAmt>
      </CompCurrentOfcrDirectorsGrp>
      <OtherSalariesAndWagesGrp>
        <TotalAmt>2706113</TotalAmt>
      </OtherSalariesAndWagesGrp>
      <PensionPlanContributionsGrp>
        <TotalAmt>400611</TotalAmt>
      </PensionPlanContributionsGrp>
      <OtherEmployeeBenefitsGrp>
        <TotalAmt>976284</TotalAmt>
      </OtherEmployeeBenefitsGrp>
      <PayrollTaxesGrp>
        <TotalAmt>317602</TotalAmt>
      </PayrollTaxesGrp>
      <FeesForServicesLegalGrp>
        <TotalAmt>235672</TotalAmt>
      </FeesForServicesLegalGrp>
      <FeesForServicesAccountingGrp>
        <TotalAmt>35800</TotalAmt>
      </FeesForServicesAccountingGrp>
      <FeesForServicesLobbyingGrp>
        <TotalAmt>443523</TotalAmt>
      </FeesForServicesLobbyingGrp>
      <FeesForSrvcInvstMgmntFeesGrp>
        <TotalAmt>36084</TotalAmt>
      </FeesForSrvcInvstMgmntFeesGrp>
      <FeesForServicesOtherGrp>
        <TotalAmt>1294658</TotalAmt>
      </FeesForServicesOtherGrp>
      <AdvertisingGrp>
        <TotalAmt>109098</TotalAmt>
      </AdvertisingGrp>
      <OfficeExpensesGrp>
        <TotalAmt>138482</TotalAmt>
      </OfficeExpensesGrp>
      <InformationTechnologyGrp>
        <TotalAmt>767052</TotalAmt>
      </InformationTechnologyGrp>
      <OccupancyGrp>
        <TotalAmt>226654</TotalAmt>
      </OccupancyGrp>
      <TravelGrp>
        <TotalAmt>1080257</TotalAmt>
      </TravelGrp>
      <ConferencesMeetingsGrp>
        <TotalAmt>6308709</TotalAmt>
      </ConferencesMeetingsGrp>
      <InterestGrp>
        <TotalAmt>16908</TotalAmt>
      </InterestGrp>
      <DepreciationDepletionGrp>
        <TotalAmt>259276</TotalAmt>
      </DepreciationDepletionGrp>
      <InsuranceGrp>
        <TotalAmt>244776</TotalAmt>
      </InsuranceGrp>
      <OtherExpensesGrp>
        <Desc>CONSUMER ED. CAMPAIGN</Desc>
        <TotalAmt>4819669</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>MEMBER COMMUNICATIONS</Desc>
        <TotalAmt>949272</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>BANK AND CREDIT CARD FE</Desc>
        <TotalAmt>367723</TotalAmt>
      </OtherExpensesGrp>
      <OtherExpensesGrp>
        <Desc>HONORARIA AND SPEAKER F</Desc>
        <TotalAmt>67683</TotalAmt>
      </OtherExpensesGrp>
      <AllOtherExpensesGrp>
        <TotalAmt>254366</TotalAmt>
      </AllOtherExpensesGrp>
      <TotalFunctionalExpensesGrp>
        <TotalAmt>24640625</TotalAmt>
      </TotalFunctionalExpensesGrp>
      <CashNonInterestBearingGrp>
        <BOYAmt>2335891</BOYAmt>
        <EOYAmt>2915276</EOYAmt>
      </CashNonInterestBearingGrp>
      <SavingsAndTempCashInvstGrp>
        <BOYAmt>398334</BOYAmt>
        <EOYAmt>447768</EOYAmt>
      </SavingsAndTempCashInvstGrp>
      <AccountsReceivableGrp>
        <BOYAmt>1266876</BOYAmt>
        <EOYAmt>1202009</EOYAmt>
      </AccountsReceivableGrp>
      <InventoriesForSaleOrUseGrp>
        <BOYAmt>103160</BOYAmt>
        <EOYAmt>90563</EOYAmt>
      </InventoriesForSaleOrUseGrp>
      <PrepaidExpensesDefrdChargesGrp>
        <BOYAmt>523253</BOYAmt>
        <EOYAmt>789454</EOYAmt>
      </PrepaidExpensesDefrdChargesGrp>
      <LandBldgEquipCostOrOtherBssAmt>9680384</LandBldgEquipCostOrOtherBssAmt>
      <LandBldgEquipAccumDeprecAmt>6766126</LandBldgEquipAccumDeprecAmt>
      <LandBldgEquipBasisNetGrp>
        <BOYAmt>3208987</BOYAmt>
        <EOYAmt>2914258</EOYAmt>
      </LandBldgEquipBasisNetGrp>
      <InvestmentsPubTradedSecGrp>
        <BOYAmt>27378763</BOYAmt>
        <EOYAmt>25403215</EOYAmt>
      </InvestmentsPubTradedSecGrp>
      <InvestmentsOtherSecuritiesGrp>
        <BOYAmt>637642</BOYAmt>
        <EOYAmt>762642</EOYAmt>
      </InvestmentsOtherSecuritiesGrp>
      <OtherAssetsTotalGrp>
        <BOYAmt>67993</BOYAmt>
        <EOYAmt>67993</EOYAmt>
      </OtherAssetsTotalGrp>
      <TotalAssetsGrp>
        <BOYAmt>35920899</BOYAmt>
        <EOYAmt>34593178</EOYAmt>
      </TotalAssetsGrp>
      <AccountsPayableAccrExpnssGrp>
        <BOYAmt>4675243</BOYAmt>
        <EOYAmt>4366426</EOYAmt>
      </AccountsPayableAccrExpnssGrp>
      <DeferredRevenueGrp>
        <BOYAmt>1294884</BOYAmt>
        <EOYAmt>1174794</EOYAmt>
      </DeferredRevenueGrp>
      <MortgNotesPyblScrdInvstPropGrp>
        <BOYAmt>2500000</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </MortgNotesPyblScrdInvstPropGrp>
      <TotalLiabilitiesGrp>
        <BOYAmt>8470127</BOYAmt>
        <EOYAmt>5541220</EOYAmt>
      </TotalLiabilitiesGrp>
      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
      <NoDonorRestrictionNetAssetsGrp>
        <BOYAmt>27372855</BOYAmt>
        <EOYAmt>28967877</EOYAmt>
      </NoDonorRestrictionNetAssetsGrp>
      <DonorRestrictionNetAssetsGrp>
        <BOYAmt>77917</BOYAmt>
        <EOYAmt>84081</EOYAmt>
      </DonorRestrictionNetAssetsGrp>
      <TotalNetAssetsFundBalanceGrp>
        <BOYAmt>27450772</BOYAmt>
        <EOYAmt>29051958</EOYAmt>
      </TotalNetAssetsFundBalanceGrp>
      <TotLiabNetAssetsFundBalanceGrp>
        <BOYAmt>35920899</BOYAmt>
        <EOYAmt>34593178</EOYAmt>
      </TotLiabNetAssetsFundBalanceGrp>
      <ReconcilationRevenueExpnssAmt>-37347</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>1638533</NetUnrlzdGainsLossesInvstAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>1</FSAuditedInd>
      <FSAuditedBasisGrp>
        <ConsolidatedBasisFinclStmtInd>X</ConsolidatedBasisFinclStmtInd>
      </FSAuditedBasisGrp>
      <AuditCommitteeInd>1</AuditCommitteeInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
    </IRS990>
    <IRS990ScheduleC documentId="RetDoc1039700001">
      <SubstantiallyAllDuesNondedInd>0</SubstantiallyAllDuesNondedInd>
      <OnlyInHouseLobbyingInd>0</OnlyInHouseLobbyingInd>
      <AgreeCarryoverPriorYearInd>0</AgreeCarryoverPriorYearInd>
      <DuesAssessmentsAmt>12390006</DuesAssessmentsAmt>
      <NonDeductibleLbbyngPltclCYAmt>570119</NonDeductibleLbbyngPltclCYAmt>
      <NonDeductibleLbbyngPltclTotAmt>570119</NonDeductibleLbbyngPltclTotAmt>
      <AggregateReportedDuesNtcAmt>865624</AggregateReportedDuesNtcAmt>
      <TaxableAmt>-295505</TaxableAmt>
    </IRS990ScheduleC>
    <IRS990ScheduleD documentId="RetDoc1040000001">
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>76049</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>5679</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>4600</OtherExpendituresAmt>
        <EndYearBalanceAmt>77128</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>76326</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>4011</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>4288</OtherExpendituresAmt>
        <EndYearBalanceAmt>76049</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>88871</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>-5869</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>6676</OtherExpendituresAmt>
        <EndYearBalanceAmt>76326</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>87894</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>3243</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>2266</OtherExpendituresAmt>
        <EndYearBalanceAmt>88871</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>82987</BeginningYearBalanceAmt>
        <InvestmentEarningsOrLossesAmt>5092</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>185</OtherExpendituresAmt>
        <EndYearBalanceAmt>87894</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.00000</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.77000</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.23000</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>0</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>0</EndowmentsHeldRelatedOrgInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>684000</OtherCostOrOtherBasisAmt>
        <BookValueAmt>684000</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>6885951</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>4932570</DepreciationAmt>
        <BookValueAmt>1953381</BookValueAmt>
      </BuildingsGrp>
      <LeaseholdImprovementsGrp>
        <OtherCostOrOtherBasisAmt>157157</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>108496</DepreciationAmt>
        <BookValueAmt>48661</BookValueAmt>
      </LeaseholdImprovementsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>969554</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>822441</DepreciationAmt>
        <BookValueAmt>147113</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>983722</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>902619</DepreciationAmt>
        <BookValueAmt>81103</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>2914258</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>26575940</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>1638533</NetUnrealizedGainsInvstAmt>
      <RevenueNotReportedAmt>1638533</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>24937407</RevenueSubtotalAmt>
      <InvestmentExpensesNotIncldAmt>36084</InvestmentExpensesNotIncldAmt>
      <OtherRevenuesNotIncludedAmt>-370212</OtherRevenuesNotIncludedAmt>
      <RevenueNotReportedFinclStmtAmt>-334128</RevenueNotReportedFinclStmtAmt>
      <TotalRevenuePerForm990Amt>24603279</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>24974754</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>370212</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>370212</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>24604542</ExpensesSubtotalAmt>
      <InvestmentExpensesNotIncld2Amt>36084</InvestmentExpensesNotIncld2Amt>
      <ExpensesNotRptFinclStmtAmt>36084</ExpensesNotRptFinclStmtAmt>
      <TotalExpensesPerForm990Amt>24640626</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>INCOME IS APPLIED TOWARD THE EXPENSES AND HONORARIUM FOR THE MERSHON LECTURE PRESENTED AT THE ANNUAL SESSION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>AAO IS EXEMPT FROM FEDERAL INCOME TAXES UNDER SECTION 501(C)(6) OF THE INTERNAL REVENUE CODE (THE "CODE"), EXCEPT ON NET INCOME DERIVED FROM UNRELATED BUSINESS ACTIVITIES AS DEFINED IN THE CODE. ACCORDINGLY, AAO FILES AS A TAX EXEMPT ORGANIZATION. AAOSI IS A FOR-PROFIT SUBSIDIARY AND FILES A SEPARATE INCOME TAX RETURN. INCOME TAXES ARE PROVIDED FOR THE TAX EFFECTS OF THE TRANSACTIONS OF AAOSI AS REPORTED IN THESE CONSOLIDATED FINANCIAL STATEMENTS. PAC CONSTITUTES A POLITICAL ORGANIZATION UNDER SECTION 527(F)(3) OF THE INTERNAL REVENUE CODE, AND IS, THEREFORE, SUBJECT TO INCOME TAX ON TAXABLE INCOME. FOR THESE PURPOSES, CAMPAIGN CONTRIBUTIONS ARE NOT INCLUDIBLE AND EXPENDITURES FOR CAMPAIGN PURPOSES ARE NOT DEDUCTIBLE IN DETERMINING TAXABLE INCOME. THE ASSOCIATION IS REQUIRED TO EVALUATE TAX POSITIONS TAKEN (OR EXPECTED TO BE TAKEN) IN THE COURSE OF PREPARING THE ASSOCIATION'S TAX RETURNS AND RECOGNIZE A TAX LIABILITY IF THE ASSOCIATION HAS TAKEN AN UNCERTAIN TAX POSITION THAT MORE LIKELY THAN NOT WOULD NOT BE SUSTAINED UPON EXAMINATION BY THE APPLICABLE TAXING AUTHORITIES. THE ASSOCIATION HAS ANALYZED THE TAX POSITIONS TAKEN AND HAS CONCLUDED THAT AS OF MAY 31, 2024, THERE ARE NO UNCERTAIN TAX POSITIONS TAKEN, OR EXPECTED TO BE TAKEN, THAT WOULD REQUIRE RECOGNITION OF A LIABILITY OR DISCLOSURE IN THE CONSOLIDATED FINANCIAL STATEMENTS. IF APPLICABLE, THE ASSOCIATION RECOGNIZES INTEREST AND PENALTIES RELATED TO UNRECOGNIZED TAX LIABILITIES IN THE CONSOLIDATED STATEMENTS OF INCOME. THE ASSOCIATION FOLLOWS GUIDANCE ISSUED BY THE FASB ON ACCOUNTING FOR INCOME TAXES AND HAS EVALUATED ITS TAX POSITIONS, EXPIRING STATUTES OF LIMITATIONS, AUDITS, PROPOSED SETTLEMENTS, CHANGES IN TAX LAW AND NEW AUTHORITATIVE RULINGS, AND BELIEVES THAT NO PROVISION FOR INCOME TAXES IS NECESSARY TO COVER ANY UNCERTAIN TAX POSITIONS. THE ASSOCIATION'S RETURNS FOR TAX YEARS 2020 AND LATER REMAIN SUBJECT TO EXAMINATION BY TAXING AUTHORITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI, LINE 4B - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>RENTAL EXPENSES -270,271. COST OF GOODS SOLD -99,941.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII, LINE 2D - OTHER ADJUSTMENTS:</FormAndLineReferenceDesc>
        <ExplanationTxt>RENTAL EXPENSES 270,271. COST OF GOODS SOLD 99,941.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>1</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AMERICAN DENTAL EDUCATION ASSOCIATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>211 E CHICAGO AVE</AddressLine1Txt>
          <CityNm>CHICAGO</CityNm>
          <StateAbbreviationCd>IL</StateAbbreviationCd>
          <ZIPCd>60611</ZIPCd>
        </USAddress>
        <RecipientEIN>360724690</RecipientEIN>
        <CashGrantAmt>7000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>GRADUATE OTRHODONTIC RESIDENTS PROGRAM</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>338 PHEASANT RUN LANE</AddressLine1Txt>
          <CityNm>FINDLAY</CityNm>
          <StateAbbreviationCd>OH</StateAbbreviationCd>
          <ZIPCd>45840</ZIPCd>
        </USAddress>
        <RecipientEIN>464807567</RecipientEIN>
        <CashGrantAmt>75000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>FACULTY FELLOWSHIP</GrantTypeTxt>
        <RecipientCnt>6</RecipientCnt>
        <CashGrantAmt>180000</CashGrantAmt>
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      <GrantsOtherAsstToIndivInUSGrp>
        <GrantTypeTxt>CRANIOFACIAL ORTHODONTIC FELLOWSHIP</GrantTypeTxt>
        <RecipientCnt>1</RecipientCnt>
        <CashGrantAmt>30000</CashGrantAmt>
      </GrantsOtherAsstToIndivInUSGrp>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AMERICAN ASSOCIATION OF ORTHODONTISTS PROVIDES SPONSORSHIPS AND SIMILAR FUNDING TO ESTABLISHED PROGRAMS AND ORGANIZATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleI>
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      <IdemnificationGrossUpPmtsInd>X</IdemnificationGrossUpPmtsInd>
      <WrittenPolicyRefTAndEExpnssInd>1</WrittenPolicyRefTAndEExpnssInd>
      <SubstantiationRequiredInd>1</SubstantiationRequiredInd>
      <IndependentConsultantInd>X</IndependentConsultantInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>0</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>0</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>0</EquityBasedCompArrngmInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LYNNE THOMAS GORDON</PersonNm>
        <TitleTxt>CHIEF EXECUTIVE OFFICER</TitleTxt>
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        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>33386</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>55488</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>14156</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>588976</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>MLINDA BROTHERS</PersonNm>
        <TitleTxt>VP OF STRATEGY &amp; INNOVATION</TitleTxt>
        <BaseCompensationFilingOrgAmt>218483</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>22542</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>40696</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>281721</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
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      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>PAUL LAWRENCE</PersonNm>
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        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>18803</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>48617</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>267112</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>NATHAN MICK</PersonNm>
        <TitleTxt>DIRECTOR OF ADVOCACY</TitleTxt>
        <BaseCompensationFilingOrgAmt>187309</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>17478</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>29295</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>234082</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>ELIZABETH DISCHERT</PersonNm>
        <TitleTxt>VP OF EDUCATION AND EVENTS</TitleTxt>
        <BaseCompensationFilingOrgAmt>156610</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>16553</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>40223</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>213386</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>CHRISTIE OLDEN</PersonNm>
        <TitleTxt>CHIEF FINANCIAL OFFICER</TitleTxt>
        <BaseCompensationFilingOrgAmt>189760</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>5564</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>13660</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>208984</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>LAURA SCHULTZ</PersonNm>
        <TitleTxt>NETWORK MANAGER</TitleTxt>
        <BaseCompensationFilingOrgAmt>133918</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>13401</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>38202</NontaxableBenefitsFilingOrgAmt>
        <NontaxableBenefitsRltdOrgsAmt>0</NontaxableBenefitsRltdOrgsAmt>
        <TotalCompensationFilingOrgAmt>185521</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>JENNIFER DIEBLING</PersonNm>
        <TitleTxt>DIRECTOR OF MARKETING &amp; COMMUNICATIO</TitleTxt>
        <BaseCompensationFilingOrgAmt>149884</BaseCompensationFilingOrgAmt>
        <CompensationBasedOnRltdOrgsAmt>0</CompensationBasedOnRltdOrgsAmt>
        <BonusFilingOrganizationAmount>0</BonusFilingOrganizationAmount>
        <BonusRelatedOrganizationsAmt>0</BonusRelatedOrganizationsAmt>
        <OtherCompensationFilingOrgAmt>0</OtherCompensationFilingOrgAmt>
        <OtherCompensationRltdOrgsAmt>0</OtherCompensationRltdOrgsAmt>
        <DeferredCompensationFlngOrgAmt>4692</DeferredCompensationFlngOrgAmt>
        <DeferredCompRltdOrgsAmt>0</DeferredCompRltdOrgsAmt>
        <NontaxableBenefitsFilingOrgAmt>21286</NontaxableBenefitsFilingOrgAmt>
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        <TotalCompensationFilingOrgAmt>175862</TotalCompensationFilingOrgAmt>
        <TotalCompensationRltdOrgsAmt>0</TotalCompensationRltdOrgsAmt>
        <CompReportPrior990FilingOrgAmt>0</CompReportPrior990FilingOrgAmt>
        <CompReportPrior990RltdOrgsAmt>0</CompReportPrior990RltdOrgsAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>BRANDON HACKWORTH</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>BOARD MEMBERS AND OFFICERS MAY BE REIMBURSED FOR THE TRAVEL OF A SPOUSE OR GUEST TO MEETINGS SPECIFIED IN THE POLICY. GENERALLY, BOARD AND COMMITTEE MEETINGS ARE NOT ELIGIBLE FOR REIMBURSEMENT OF COMPANION TRAVEL. FOR SPECIFIED MEETINGS INVOLVING FLIGHTS OVER 2 HOURS, OFFICERS MAY BE REIMBURSED FOR THE NEXT CLASS ABOVE COACH SUBJECT TO THE WRITTEN TRAVEL POLICY.</ExplanationTxt>
      </SupplementalInformationDetail>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 1A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE COMMITTEE IS COMPOSED OF FIVE MEMBERS: THE PRESIDENT, THE PRESIDENT-ELECT, THE SECRETARY-TREASURER, AND THE TWO MOST SENIOR TRUSTEES. THIS COMMITTEE SHALL HAVE THE POWER TO ACT FOR THE FULL BOARD OF TRUSTEES IN THE INTERIM BETWEEN SESSIONS OF THE BOARD, AND IT SHALL REPORT SUCH ACTIONS TO THE BOARD AT ITS NEXT MEETING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>AAO HAS A TOTAL OF 19,120 MEMBERS (INCLUDING 3,223 INTERNATIONAL MEMBERS)</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE HOUSE OF DELEGATES AND THE BOARD OF TRUSTEES ARE CHOSEN BY MEMBERS OF THE AAO CONSTITUENT ORGANIZATIONS. MEMBERS OF THE CONSTITUENT ORGANIZATIONS ARE ALSO MEMBERS OF THE AAO.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS PREPARED BY OUTSIDE ACCOUNTANTS, BASED UPON INFORMATION PROVIDED BY AAO. THE FORM 990 IS REVIEWED BY THE ACCOUNTING MANAGER AND THE VP OF FINANCE. THE 990 IS PROVIDED TO THE BOARD OF TRUSTEES BEFORE FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>ANNUALLY, ALL BOARD MEMBERS SIGN A CONFLICT OF INTEREST POLICY ACKNOWLEDGEMENT, WHICH ASKS THEM TO LIST ANY POTENTIAL CONFLICT. ALL DISCLOSED CONFLICTS ARE EXAMINED BY THE APPROPRIATE PERSON. IN ADDITION, EACH BOARD MEETING INCLUDES INQUIRY AS TO WHETHER THERE ARE ANY POTENTIAL CONFLICTS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>COAC (CENTRAL OFFICE ADVISORY COMMITTEE) MADE UP OF VOTING MEMBERS OF THE BOT (BOARD OF TRUSTEES) DETERMINES THE CHIEF EXECUTIVE OFFICER'S COMPENSATION. THEY DO A WRITTEN EVALUATION BASED ON A BOARD SOURCE EXECUTIVE DIRECTOR/CHIEF STAFF FORM. INFORMATION FROM SALARY SURVEYS BY ASAE, THE QUATT SURVEY AND ASSOCIATION FORUM BENCHMARKING ARE PROVIDED TO THE COAC. FOR COMPENSATION OTHER THAN THE CHIEF EXECUTIVE OFFICER, THE INDEPENDENT SOURCE (AAIMS) IS USED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>SUMMARY FINANCIAL STATEMENTS ARE PUBLISHED ON THE AAO MEMBERS' WEBSITE. BYLAWS AND ALL POLICIES ARE AVAILABLE UPON REQUEST AND ARE POSTED ON THE AAO MEMBERS' WEBSITE. FINANCIAL INFORMATION IS UPDATED WITH D&amp;B ANNUALLY.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>NO CHANGES TO THIS PROCESS</ExplanationTxt>
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        <DisregardedEntityName>
          <BusinessNameLine1Txt>AAO POLITICAL ACTION COMMITTEE</BusinessNameLine1Txt>
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        <USAddress>
          <AddressLine1Txt>401 N LINDBERGH BLVD</AddressLine1Txt>
          <CityNm>ST LOUIS</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
          <ZIPCd>63141</ZIPCd>
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        <EIN>431689930</EIN>
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          <AddressLine1Txt>401 N LINDBERGH BLVD</AddressLine1Txt>
          <CityNm>ST LOUIS</CityNm>
          <StateAbbreviationCd>MO</StateAbbreviationCd>
          <ZIPCd>63141</ZIPCd>
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          <BusinessNameLine1Txt>AAO</BusinessNameLine1Txt>
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        <ShareOfEOYAssetsAmt>2111682</ShareOfEOYAssetsAmt>
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      <ReceiptOfIntAnntsRntsRyltsInd>1</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>1</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>1</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>1</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>1</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AAO SERVICES INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>A</TransactionTypeTxt>
        <InvolvedAmt>82008</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AAO SERVICES INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>N</TransactionTypeTxt>
        <InvolvedAmt>127465</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AAO SERVICES INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>O</TransactionTypeTxt>
        <InvolvedAmt>96279</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
      <TransactionsRelatedOrgGrp>
        <OtherOrganizationName>
          <BusinessNameLine1Txt>AAO SERVICES INC</BusinessNameLine1Txt>
        </OtherOrganizationName>
        <TransactionTypeTxt>Q</TransactionTypeTxt>
        <InvolvedAmt>1351389</InvolvedAmt>
        <MethodOfAmountDeterminationTxt>CASH</MethodOfAmountDeterminationTxt>
      </TransactionsRelatedOrgGrp>
    </IRS990ScheduleR>
  </ReturnData>
</Return>