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      <TotalExpensesPerForm990Amt>909111</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 1a:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Association's collections consist of artifacts, documents, manuscripts, books, and visual arts, as well as other documents that are held for educational, research, and curatorial purposes. The Association uses the artifacts and specimens for public exhibition, as loans to other museums, and for educational programs and research. The Association is responsible for the preservation of its collections in perpetuity. Under the direction of the Board of Trustees (the Board) of the Association, the Executive Director of the Association, and the Curatorial Staff, collections continue to be cared for, used, and expanded. All requests for deaccession must be approved by the Board. If the Association is unable to locate an appropriate repository for transfer or exchange, the Association may sell the object. The proceeds from sale are used solely for acquisition or care, through preservation or conservation, of the collection. The Association maintains catalogued records of accessions, deaccessions, and items in each particular collection. There were no sales or significant additions to the collections for the year ended December 31, 2023.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part III, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>See response to Part III, Line 1a for the full text of the audit note which describes the Museum's collections.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part IV, Line 2b:</FormAndLineReferenceDesc>
        <ExplanationTxt>The Museum administers funds on behalf of the Texas Historical Commission. It also holds funds for the annual San Jacinto Ceremony.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part V, Line 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>The organization's endowment is intended to provide funds to support the library.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="RetDoc1041200001">
      <MailSolicitationsInd>X</MailSolicitationsInd>
      <EmailSolicitationsInd>X</EmailSolicitationsInd>
      <PhoneSolicitationsInd>X</PhoneSolicitationsInd>
      <InPersonSolicitationsInd>X</InPersonSolicitationsInd>
      <SolicitationOfNonGovtGrantsInd>X</SolicitationOfNonGovtGrantsInd>
      <SpecialFundraisingEventsInd>X</SpecialFundraisingEventsInd>
      <AgrmtProfFundraisingActyInd>0</AgrmtProfFundraisingActyInd>
      <LicensedStatesCd>AL</LicensedStatesCd>
      <LicensedStatesCd>AK</LicensedStatesCd>
      <LicensedStatesCd>AZ</LicensedStatesCd>
      <LicensedStatesCd>AR</LicensedStatesCd>
      <LicensedStatesCd>CA</LicensedStatesCd>
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      <LicensedStatesCd>CT</LicensedStatesCd>
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      <LicensedStatesCd>NV</LicensedStatesCd>
      <LicensedStatesCd>NH</LicensedStatesCd>
      <LicensedStatesCd>NJ</LicensedStatesCd>
      <LicensedStatesCd>NM</LicensedStatesCd>
      <LicensedStatesCd>NY</LicensedStatesCd>
      <LicensedStatesCd>NC</LicensedStatesCd>
      <LicensedStatesCd>ND</LicensedStatesCd>
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      <LicensedStatesCd>OK</LicensedStatesCd>
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      <LicensedStatesCd>WA</LicensedStatesCd>
      <LicensedStatesCd>WV</LicensedStatesCd>
      <LicensedStatesCd>WI</LicensedStatesCd>
      <LicensedStatesCd>WY</LicensedStatesCd>
      <FundraisingEventInformationGrp>
        <Event1Nm>San Jacinto Dinner</Event1Nm>
        <GrossReceiptsEvent1Amt>286870</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>253150</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>33720</GrossRevenueEvent1Amt>
        <RentFacilityCostsEvent1Amt>14567</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>40478</FoodAndBeverageEvent1Amt>
        <Event2Nm>Fun Run</Event2Nm>
        <GrossReceiptsEvent2Amt>33170</GrossReceiptsEvent2Amt>
        <CharitableContriEvent2Amt>33170</CharitableContriEvent2Amt>
        <FoodAndBeverageEvent2Amt>243</FoodAndBeverageEvent2Amt>
        <OtherDirectExpensesEvent2Amt>12568</OtherDirectExpensesEvent2Amt>
        <GrossReceiptsTotalAmt>320040</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>286320</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>33720</GrossRevenueTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>14567</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>40721</FoodAndBeverageTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>12568</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>67856</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>-34136</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <WorksOfArtGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>1</ContributionCnt>
        <MethodOfDeterminingRevenuesTxt>Collection item</MethodOfDeterminingRevenuesTxt>
      </WorksOfArtGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part I, Line 33:</FormAndLineReferenceDesc>
        <ExplanationTxt>San Jacinto Museum and Battlefield Association does not capitalize its collections and therefore does not report any corresponding revenue from collections that have been acquired through donations.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 1a</FormAndLineReferenceDesc>
        <ExplanationTxt>The Executive Committee consists of the current officers and the immediate past Board Chair (who shall serve in an ex-officio capacity for one year) and no more than two other Trustees appointed by the Chair. In the event there is a Chair-Elect who would not otherwise be on the Committee, such Chair-Elect will also be an ex-officio member of the Committee. The Chair presides at all meetings of the Executive Committee, but if the Chair is not in attendance, a Vice Chair will preside at the meeting. Except as limited by resolution of the Board of Trustees, the Executive Committee, during intervals between meetings of the Board of Trustees, possesses and may exercise all authority of the Board of Trustees regarding management of the Association including action with respect to the authorization and execution of legal instruments. The Executive Committee has established its own rules and procedures, and at least five members of the Executive Committee are necessary to constitute a quorum. The affirmative vote of not less than four Executive Committee members is necessary for adoption of any resolution or any other action.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section A, line 2</FormAndLineReferenceDesc>
        <ExplanationTxt>Robert Hixon and Gideon Hixon have a family relationship. Jamey Steen and Coble Jorgensen have a family relationship.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 11b</FormAndLineReferenceDesc>
        <ExplanationTxt>Form 990 is reviewed by the Director of Operations and the Finance Committee prior to filing with the IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>A copy of the Conflict of Interest policy is mailed to each Trustee annually for them to review, sign and return. At that time, each Trustee is required to disclose whether any potential conflicts of interest exist. These disclosures are reviewed by a committee of Trustees.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section B, line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>The Finance Committee uses comparable data to review and approve the Director of Operations' compensation annually.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990, Part VI, Section C, line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>Available upon request.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Part VII</FormAndLineReferenceDesc>
        <ExplanationTxt>The Museum has an agreement with the Texas Historical Commission (THC)) to compensate Museum personnel. The Museum's Executive Director Amy Rogers is an employee of the THC. The Part VII compensation for Amy Rogers reflects the amount paid by THC for her services to the Museum. Effective September 1, 2023 David Avila's compensation as Museum Director of Operations is paid by the Texas Historical Commission. The Part VII compensation for David Avila reflects nine months paid directly by the Museum and four months paid by the THC.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>