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        <ProgramServicesAmt>334230</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1681</ManagementAndGeneralAmt>
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      <OtherEmployeeBenefitsGrp>
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        <ProgramServicesAmt>9894</ProgramServicesAmt>
        <ManagementAndGeneralAmt>580</ManagementAndGeneralAmt>
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      <PayrollTaxesGrp>
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        <ProgramServicesAmt>33164</ProgramServicesAmt>
        <ManagementAndGeneralAmt>900</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>1712</ManagementAndGeneralAmt>
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        <FundraisingAmt>261</FundraisingAmt>
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        <ProgramServicesAmt>9381</ProgramServicesAmt>
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      <ConferencesMeetingsGrp>
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        <ProgramServicesAmt>1431</ProgramServicesAmt>
        <ManagementAndGeneralAmt>1304</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>120371</ProgramServicesAmt>
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        <EOYAmt>2500</EOYAmt>
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        <EOYAmt>191179</EOYAmt>
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      <DonorRestrictionNetAssetsGrp>
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        <EOYAmt>498182</EOYAmt>
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      <PriorPeriodAdjustmentsAmt>-41677</PriorPeriodAdjustmentsAmt>
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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>0</FSAuditedInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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        <CurrentTaxYearMinus2YearsAmt>159681</CurrentTaxYearMinus2YearsAmt>
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        <CurrentTaxYearMinus2YearsAmt>159681</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>608648</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>631140</CurrentTaxYearAmt>
        <TotalAmt>2175019</TotalAmt>
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      <SubstantialContributorsTotAmt>145864</SubstantialContributorsTotAmt>
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        <CurrentTaxYearMinus3YearsAmt>107683</CurrentTaxYearMinus3YearsAmt>
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        <CurrentTaxYearAmt>171</CurrentTaxYearAmt>
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        <ExplanationTxt>THE 2021 TAX PERIOD ON SCHEDULE A, PART II REPRESENTS A SHORT YEAR FROM 1/1/2021 TO 06/30/2021 AS AOB ELECTED TO CHANGE ITS ACCOUNTING PERIOD.</ExplanationTxt>
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          <AddressLine2>RESTRICTED</AddressLine2>
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          <State>RESTRICTED</State>
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        <CashGrantAmt>13550</CashGrantAmt>
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        <FormAndLineReferenceDesc>PART I, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>STIPENDS WERE GIVEN TO AUTHORS AND ILLUSTRATORS WHO PARTICIPATED IN THE FOLLOWING AOB PROGRAMS: ARTIST-IN-RESIDENCE, STEM RESIDENCE, AND NEW AND EMERGING ARTISTS OF COLOR. THE STIPENDS WERE PAID FOR BY RESTRICTED GRANTS AWARDED SPECIFICALLY FOR THIS PURPOSE. NONE WERE PAID OUT OF GENERAL FUNDS. THESE FUNDS ARE MONITORED BY THE AOB'S MANAGEMENT AS WELL AS BY THE GOVERNMENT AGENCIES THAT AWARDED THEM. AOB REPORTS TO GRANTORS ON THE USE OF THE STIPENDS.</ExplanationTxt>
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    <IRS990ScheduleM documentId="RetDoc1042900001">
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        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <NoncashContributionsRptF990Amt>2143</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
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      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <NoncashContributionsRptF990Amt>24495</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
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      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, COLUMN (B):</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TOTAL IN COLUMN (B) REPRESENTS THE TOTAL NUMBER OF CONTRIBUTIONS RECEIVED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE TREASURER PREPARES THE FEDERAL FORM 990. AFTER GOING THROUGH THE PREPARATION PROCESS, THE DRAFT FORM 990 IS FIRST REVIEWED BY THE EXECUTIVE DIRECTOR AND OUTSOURCED ACCOUNTANT. AFTERWARDS, THE DRAFT FORM 990 IS REVIEWED AND APPROVED BY THE FINANCE COMMITTEE. LASTLY, THE DRAFT FORM 990 IS DISTRIBUTED TO THE FULL BOARD OF DIRECTORS FOR THEIR REVIEW AND APPROVAL PRIOR TO FILING WITH THE INTERNAL REVENUE SERVICE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>AN OPEN BOOK FOUNDATION REQUIRES THAT EACH BOARD OFFICER AND DIRECTOR DISCLOSE ALL CONTEMPLATED OR EXISTING RELATED PARTY TRANSACTIONS KNOWN TO AND INVOLVING, SUCH DIRECTOR OR OFFICE OF THE STAFF MEMBER. IN ADDITION, EACH BOARD OFFICER AND DIRECTOR MUST ANNUALLY SIGN A STATEMENT CONFIRMING THAT SUCH DISCLOSURES HAVE BEEN MADE. ALL RELATED PARTY TRANSACTIONS SHALL BE REVIEWED BY INDEPENDENT DIRECTORS. IN REVIEWING SUCH TRANSACTIONS, THE BOARD MAY REQUEST THAT THE INTERESTED PARTY STATE HIS OR HER VIEWS ON THE APPROPRIATENESS OF THE TRANSACTION. THE INTERESTED PARTY THEN MUST LEAVE THE MEETING WHILE THE INDEPENDENT DIRECTORS DETERMINE WHETHER THE TRANSACTION IS FAIR AND REASONABLE AND IS IN THE BEST INTEREST OF AN OPEN BOOK FOUNDATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FINANCE AND GOVERNANCE COMMITTEES REVIEW THE EXECUTIVE DIRECTOR'S SALARY AND RECOMMEND A COMPENSATION LEVEL TO THE BOARD OF DIRECTORS FOR A VOTE. CONSIDERATIONS INCLUDE COMPARABILITY DATA, CURRENT BUDGET, AND FORECAST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>AOB MAKES ITS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST. THEY ARE ALSO SUPPLIED TO THE TO THE GOVERNMENT AND OTHER AGENCIES TO FULFILL GRANT AND LICENSING REQUIREMENTS.</ExplanationTxt>
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</Return>
