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        <PersonNm>PROFESSOR JUDY L WALKER</PersonNm>
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        <PersonNm>CATHERINE ROBERTS</PersonNm>
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        <PersonNm>EMILY RILEY</PersonNm>
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        <PersonNm>LUCY MADDOCK BEGINNING 102020</PersonNm>
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        <PersonNm>PROFESSOR CARLA SAVAGE</PersonNm>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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        <PersonNm>EDWARD DUNNE</PersonNm>
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        <PersonNm>KAREN SAXE</PersonNm>
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        <PersonNm>ROBERT HARINGTON</PersonNm>
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        <PersonNm>T CHRISTINE STEVENS</PersonNm>
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        <PersonNm>THOMAS BLYTHE</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SERGEI GELFAND</PersonNm>
        <TitleTxt>PUBLISHER</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>EROL OZIL</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>GERARD LOON</PersonNm>
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        <PersonNm>DEAN CARLSON</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>ABBE HERZIG</PersonNm>
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      <CompensationFromOtherSrcsInd>1</CompensationFromOtherSrcsInd>
      <ContractorCompensationGrp>
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          <BusinessName>
            <BusinessNameLine1Txt>UNIVERSITY OF NORTH CAROLINA</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>220 E CAMERON AVENUE</AddressLine1Txt>
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            <StateAbbreviationCd>NC</StateAbbreviationCd>
            <ZIPCd>27514</ZIPCd>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>WESTAT INC</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>PO BOX 1004</AddressLine1Txt>
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            <ZIPCd>20850</ZIPCd>
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      <ContractorCompensationGrp>
        <ContractorName>
          <PersonNm>ERIKO HIRONAKA</PersonNm>
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          <USAddress>
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      <ContractorCompensationGrp>
        <ContractorName>
          <BusinessName>
            <BusinessNameLine1Txt>SFK CONSULTING</BusinessNameLine1Txt>
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        <ContractorAddress>
          <USAddress>
            <AddressLine1Txt>1000 GREENLEAF CT</AddressLine1Txt>
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      <MembershipDuesAmt>2507330</MembershipDuesAmt>
      <GovernmentGrantsAmt>503119</GovernmentGrantsAmt>
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      <TotalContributionsAmt>3551881</TotalContributionsAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>MEETINGS</Desc>
        <BusinessCd>541900</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>1547672</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>18559</UnrelatedBusinessRevenueAmt>
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      <ProgramServiceRevenueGrp>
        <Desc>MEMBERSHIP AND OUTREACH</Desc>
        <BusinessCd>541900</BusinessCd>
        <TotalRevenueColumnAmt>169601</TotalRevenueColumnAmt>
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      <ProgramServiceRevenueGrp>
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        <BusinessCd>900099</BusinessCd>
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        <TotalRevenueColumnAmt>4760569</TotalRevenueColumnAmt>
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        <SecuritiesAmt>6551973</SecuritiesAmt>
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        <SecuritiesAmt>2387441</SecuritiesAmt>
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      <NetGainOrLossInvestmentsGrp>
        <TotalRevenueColumnAmt>2387441</TotalRevenueColumnAmt>
        <ExclusionAmt>2387441</ExclusionAmt>
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        <RelatedOrExemptFuncIncomeAmt>23746380</RelatedOrExemptFuncIncomeAmt>
        <UnrelatedBusinessRevenueAmt>18559</UnrelatedBusinessRevenueAmt>
        <ExclusionAmt>7148010</ExclusionAmt>
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      <GrantsToDomesticOrgsGrp>
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        <ProgramServicesAmt>366831</ProgramServicesAmt>
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        <ProgramServicesAmt>154393</ProgramServicesAmt>
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        <ProgramServicesAmt>120540</ProgramServicesAmt>
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        <ProgramServicesAmt>1834499</ProgramServicesAmt>
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        <ProgramServicesAmt>13458734</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1225741</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1244173</ProgramServicesAmt>
        <ManagementAndGeneralAmt>143472</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>1067587</ProgramServicesAmt>
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        <FundraisingAmt>25786</FundraisingAmt>
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        <ProgramServicesAmt>20503</ProgramServicesAmt>
        <ManagementAndGeneralAmt>17797</ManagementAndGeneralAmt>
        <FundraisingAmt>1222</FundraisingAmt>
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        <ManagementAndGeneralAmt>52826</ManagementAndGeneralAmt>
        <FundraisingAmt>2387</FundraisingAmt>
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      <AdvertisingGrp>
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        <ProgramServicesAmt>44266</ProgramServicesAmt>
        <FundraisingAmt>4712</FundraisingAmt>
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        <FundraisingAmt>411</FundraisingAmt>
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        <ProgramServicesAmt>479363</ProgramServicesAmt>
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        <ProgramServicesAmt>440615</ProgramServicesAmt>
        <ManagementAndGeneralAmt>30845</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>69133</ManagementAndGeneralAmt>
        <FundraisingAmt>13100</FundraisingAmt>
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        <ManagementAndGeneralAmt>114</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>873152</ProgramServicesAmt>
        <ManagementAndGeneralAmt>201522</ManagementAndGeneralAmt>
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        <FundraisingAmt>922</FundraisingAmt>
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      <OtherExpensesGrp>
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      <OtherExpensesGrp>
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        <FundraisingAmt>1724</FundraisingAmt>
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        <ManagementAndGeneralAmt>2658</ManagementAndGeneralAmt>
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      <AllOtherExpensesGrp>
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        <ProgramServicesAmt>27323197</ProgramServicesAmt>
        <ManagementAndGeneralAmt>3249550</ManagementAndGeneralAmt>
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        <EOYAmt>1024859</EOYAmt>
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        <EOYAmt>173999</EOYAmt>
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        <EOYAmt>406565</EOYAmt>
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        <EOYAmt>1721394</EOYAmt>
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        <EOYAmt>4035548</EOYAmt>
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        <EOYAmt>206032737</EOYAmt>
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        <EOYAmt>1005664</EOYAmt>
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        <EOYAmt>232387981</EOYAmt>
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        <EOYAmt>4783374</EOYAmt>
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        <EOYAmt>10322723</EOYAmt>
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        <EOYAmt>6282027</EOYAmt>
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        <EOYAmt>21388124</EOYAmt>
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        <EOYAmt>181622631</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
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        <EOYAmt>29377226</EOYAmt>
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        <EOYAmt>210999857</EOYAmt>
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        <EOYAmt>232387981</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>3295734</ReconcilationRevenueExpnssAmt>
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      <InfoInScheduleOPartXIIInd>X</InfoInScheduleOPartXIIInd>
      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
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        <PersonNm>THOMAS BLYTHE</PersonNm>
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        <PersonNm>GERARD LOON</PersonNm>
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        <PersonNm>EMILY RILEY</PersonNm>
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        <PersonNm>T CHRISTINE STEVENS</PersonNm>
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        <PersonNm>EROL OZIL</PersonNm>
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        <PersonNm>ABBE HERZIG</PersonNm>
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        <FormAndLineReferenceDesc>PART I, LINE 7:</FormAndLineReferenceDesc>
        <ExplanationTxt>FOR THE INDIVIDUALS WHO HAVE BONUSES LISTED, THESE ARE MERITORIOUS BONUSES REQUESTED BY MANAGERS. THESE ARE REVIEWED AND APPROVED BY THE EXECUTIVE DIRECTOR, CFO AND DIRECTOR OF HUMAN RESOURCES.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SOCIETY HAS APPROXIMATELY 30,000 MEMBERS, INDIVIDUAL AND INSTITUTIONAL, WITH NO CRITERIA FOR MEMBERSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INDIVIDUAL MEMBERSHIP ELECTS ALL BOARD MEMBERS, EXCEPT THE TREASURER AND ASSOCIATE TREASURER. THE TREASURER AND ASSOCIATE TREASURER SERVE WITH APPROVAL OF THE COUNCIL. A SECOND GOVERNING BODY, THE COUNCIL, HAS SOME MEMBERS THAT ARE ELECTED BY THE MEMBERSHIP. CHANGES TO THE BYLAWS MUST BE APPROVED BY THE MEMBERSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 7B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INDIVIDUAL MEMBERSHIP ELECTS ALL BOARD MEMBERS, EXCEPT THE TREASURER AND ASSOCIATE TREASURER. THE TREASURER AND ASSOCIATE TREASURER SERVE WITH APPROVAL OF THE COUNCIL. A SECOND GOVERNING BODY, THE COUNCIL, HAS SOME MEMBERS THAT ARE ELECTED BY THE MEMBERSHIP. CHANGES TO THE BYLAWS MUST BE APPROVED BY THE MEMBERSHIP.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE 990 IS PREPARED BY THE FISCAL DEPARTMENT AND THE SOCIETY'S TAX ADVISORS, CITRIN COOPERMAN &amp; COMPANY LLP. WHEN THE FINAL DRAFT IS PREPARED, IT IS REVIEWED BY THE CHIEF FINANCIAL OFFICER AND THE EXECUTIVE DIRECTOR. AFTER THIS REVIEW, THE BOARD OF TRUSTEES IS ASKED TO REVIEW THE 990 ELECTRONICALLY BY ACCESSING A SECURE INTERNET SITE. THEY ARE GIVEN APPROXIMATELY THREE TO FIVE BUSINESS DAYS TO REVIEW THE DRAFT. AFTER RESPONDING TO ANY FEEDBACK FROM THE TRUSTEES, THE FILING IS MADE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>AMS OFFICERS, TRUSTEES, AND KEY EMPLOYEE, WHO ARE DEFINED AS INTERESTED PERSONS, ARE REQUIRED TO DISCLOSE ANNUALLY FINANCIAL INTERESTS THAT COULD GIVE RISE TO CONFLICTS BY SIGNING OFF ON THE CONFLICT OF INTEREST POLICY. THE AMS ADOPTED THIS POLICY IN NOVEMBER 2011 AND TRUSTEES SIGNED OFF ON THIS POLICY IN NOVEMBER. EACH NOVEMBER TRUSTEES AND KEY EMPLOYEES WILL BE ASKED TO AGAIN SIGN OFF ON THE POLICY AND DISCLOSE ANY POSSIBLE OR ACTUAL CONFLICTS. THE AMS DEFINES AN "INTERESTED PERSON" ACCORDING TO THE IRS DEFINITION, AND THEY ARE ANY DIRECTOR, PRINCIPAL OFFICER , OR MEMBER OF A COMMITTEE WITH BOARD-DELEGATED POWERS, WHO HAS A DIRECT OR INDIRECT FINANCIAL INTEREST. AN INTERESTED PERSON MUST DISCLOSE A FINANCIAL INTEREST, AS DEFINED BY THE IRS, THAT IS A POTENTIAL CONFLICT TO THE BOARD OF TRUSTEES OR COMMITTEE WHO WILL DECIDE IF A CONFLICT EXISTS. IF THE BOARD OF TRUSTEES OR COMMITTEE WITH BOARD-DELEGATED POWERS, EXCLUDING THE INTERESTED PERSON DECIDES THAT A CONFLICT EXISTS, ALTERNATIVE TRANSACTIONS OR ARRANGEMENTS MIGHT BE MADE AFTER INVESTIGATING IN ORDER TO AVOID THE CONFLICT. ALTERNATIVELY, DISINTERESTED PERSONS ON THE BOARD OF TRUSTEES OR COMMITTEE MAY DETERMINE THAT A TRANSACTION IS FAIR OR REASONABLE AND IN THE BEST INTERESTS OF THE ORGANIZATION. THE INTERESTED PERSON WHO HAS A CONFLICT MAY NOT VOTE ON MATTERS FOR WHICH THERE IS A CONFLICT OF INTEREST AND THEY MUST BE EXCLUDED FROM DISCUSSIONS OF MATTERS FOR WHICH THERE IS A CONFLICT OF INTEREST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF TRUSTEES REVIEWS AND APPROVES WITH THE EXECUTIVE DIRECTOR THE PROCESS BY WHICH THE EXECUTIVE DIRECTOR ESTABLISHES THE SALARY AND BENEFITS OF THE CHIEF FINANCIAL OFFICER AND KEY EMPLOYEES FOR THE UPCOMING YEAR. INCLUDED IN THIS REVIEW IS COMPARISON DATA FROM COMPENSATION SURVEYS. WITH RESPECT TO THE EXECUTIVE DIRECTOR, THE BOARD IS GIVEN SALARY AND BENEFIT AMOUNTS APPROVED FOR THE CURRENT YEAR, AND PROFORMA AMOUNTS FOR THE UPCOMING YEAR. THE BOARD IS ALSO GIVEN COMPARISON DATA FROM COMPENSATION SURVEYS TO ASSIST WITH COMPENSATION DECISIONS FOR THE EXECUTIVE DIRECTOR. THE BOARD TAKES INTO CONSIDERATION THE INFORMATION PROVIDED BY STAFF AS WELL AS COMPENSATION SURVEYS AND PERFORMANCE IN SETTING HIS/HER COMPENSATION FOR THE FOLLOWING YEAR. ALL COMPENSATION SURVEYS USED FOR SETTING THE EXECUTIVE DIRECTOR AND KEY EMPLOYEES' SALARIES ARE FROM INDEPENDENT SOURCES, AND THEY ARE GATHERED BY A HUMAN RESOURCES PROFESSIONAL. THE BOARD DOCUMENTS THEIR PROCESS FOR SETTING THE SALARIES EACH YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>SHORTLY AFTER FILING, THE SOCIETY'S FORM 990 AND ALL SCHEDULES (EXCLUDING SCHEDULE B) IS COPIED AND MADE AVAILABLE TO THE SOCIETY'S THREE LOCATIONS. IF ANYONE REQUESTS TO SEE THE FORM 990 AND SCHEDULES, COPIES ARE PROVIDED BY STAFF VIA MAIL OR EMAIL. THE SOCIETY'S GOVERNING DOCUMENTS ARE ON THE SOCIETY'S WEBSITE. THE ANNUAL REPORT OF THE TREASURER, INCLUDING THE FINANCIAL STATEMENT, IS PUBLISHED EACH YEAR IN THE SOCIETY'S PUBLICATION, NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY. THESE PUBLICATIONS ARE AVAILABLE ON THE WEBSITE. THE 990 IS ALSO AVAILABLE ON THE GUIDESTAR WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9:</FormAndLineReferenceDesc>
        <ExplanationTxt>POSTRETIREMENT BENEFIT CHANGES 878,138.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XII, LINE 2C:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AUDIT OVERSIGHT PROCESS HAS NOT CHANGED SINCE PRIOR YEAR.</ExplanationTxt>
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          <AddressLine1Txt>416 FOURTH STREET</AddressLine1Txt>
          <CityNm>ANN ARBOR</CityNm>
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          <AddressLine1Txt>201 CHARLES STREET</AddressLine1Txt>
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      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
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</Return>
