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      <PublicSupportTotal170Amt>479013</PublicSupportTotal170Amt>
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        <CurrentTaxYearMinus3YearsAmt>10406</CurrentTaxYearMinus3YearsAmt>
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        <CurrentTaxYearMinus1YearAmt>13581</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1852</CurrentTaxYearAmt>
        <TotalAmt>39910</TotalAmt>
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      <PublicSupportCY170Pct>0.67500</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.81170</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="IRS990ScheduleB">
      <ContributorInformationGrp>
        <ContributorNum>RESTRICTED</ContributorNum>
        <ContributorBusinessName>
          <BusinessNameLine1>RESTRICTED</BusinessNameLine1>
        </ContributorBusinessName>
        <ContributorUSAddress>
          <AddressLine1>RESTRICTED</AddressLine1>
          <AddressLine2>RESTRICTED</AddressLine2>
          <City>RESTRICTED</City>
          <State>RESTRICTED</State>
          <ZIPCode>RESTRICTED</ZIPCode>
        </ContributorUSAddress>
        <TotalContributionsAmt>RESTRICTED</TotalContributionsAmt>
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    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="IRS990ScheduleD">
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <CollUsedLoanOrExchProgInd>X</CollUsedLoanOrExchProgInd>
      <SolicitedAssetsSaleInd>false</SolicitedAssetsSaleInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 1a-Text in footnote regarding SFAS 116 (ASC 958)</FormAndLineReferenceDesc>
        <ExplanationTxt>Part III has been answered that historical treasurers are held by Preservation Oklahoma. These items have been accessed as as part of a musuem collection owned by the Oklahoma Historical Society and cared for by Preservation Oklahoma (based on an operating agreement).</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 4-Description organization's collections</FormAndLineReferenceDesc>
        <ExplanationTxt>The Overholser Mansion is considered the first mansion built in Oklahoma City. David Jay Perry, the son-in-law of the Overholsers, sold the mansion and all of its belongings to the Oklahoma Historical Society in April 1972. Preservation Oklahoma has been the caretaker of this Oklahoma City treasure and contents since 2003.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Governing body meeting documentation Part VI line 8a</FormAndLineReferenceDesc>
        <ExplanationTxt>All meetings of the board of directors are contemporaneously documented by the board secretary or their appointee. All meeting documents are available upon written request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990 governing body review Part VI line 11</FormAndLineReferenceDesc>
        <ExplanationTxt>A copy of the Form 990 was presented to the Executive Director and the Board of Directors prior to the filing of the return with the Internal Revenue Service.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Conflict of interest policy compliance Part VI line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>The Board of Directors monitors the activities of the members of the Board of Directors as it relates to the conflict of interest policy of the organization.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990 availability to public Part VI line 18</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization makes its Form 990 available to the public upon written request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Governing documents etc available to public Part VI line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization makes its governing documents, policies, and financial statements available to the public upon written request.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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</Return>