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        <RelatedOrExemptFuncIncomeAmt>26325</RelatedOrExemptFuncIncomeAmt>
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      <OtherRevenueMiscGrp>
        <Desc>SALES OF SURPLUS</Desc>
        <BusinessCd>900099</BusinessCd>
        <TotalRevenueColumnAmt>21635</TotalRevenueColumnAmt>
        <ExclusionAmt>21635</ExclusionAmt>
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        <ExclusionAmt>21</ExclusionAmt>
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        <UnrelatedBusinessRevenueAmt>0</UnrelatedBusinessRevenueAmt>
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      <CompCurrentOfcrDirectorsGrp>
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        <ManagementAndGeneralAmt>5110</ManagementAndGeneralAmt>
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        <ProgramServicesAmt>5600</ProgramServicesAmt>
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        <ManagementAndGeneralAmt>1</ManagementAndGeneralAmt>
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        <FundraisingAmt>117</FundraisingAmt>
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        <ProgramServicesAmt>112429</ProgramServicesAmt>
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        <ProgramServicesAmt>365471</ProgramServicesAmt>
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        <Desc>SUPPLIES AND EQUIPMENT</Desc>
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        <Desc>REPAIRS</Desc>
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      <OtherExpensesGrp>
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      <OtherExpensesGrp>
        <Desc>MISCELLANEOUS</Desc>
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        <EOYAmt>20300</EOYAmt>
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        <EOYAmt>2997666</EOYAmt>
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      <OrganizationFollowsFASB117Ind>X</OrganizationFollowsFASB117Ind>
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      <TotLiabNetAssetsFundBalanceGrp>
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        <EOYAmt>13686879</EOYAmt>
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      <ReconcilationRevenueExpnssAmt>327378</ReconcilationRevenueExpnssAmt>
      <NetUnrlzdGainsLossesInvstAmt>294648</NetUnrlzdGainsLossesInvstAmt>
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      <AccountantCompileOrReviewInd>0</AccountantCompileOrReviewInd>
      <FSAuditedInd>0</FSAuditedInd>
      <FederalGrantAuditRequiredInd>0</FederalGrantAuditRequiredInd>
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        <CurrentTaxYearMinus2YearsAmt>1064972</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1010488</CurrentTaxYearMinus1YearAmt>
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        <CurrentTaxYearMinus2YearsAmt>1337209</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1677193</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1817194</CurrentTaxYearAmt>
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        <CurrentTaxYearMinus1YearAmt>2687681</CurrentTaxYearMinus1YearAmt>
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        <CurrentTaxYearMinus2YearsAmt>33200</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>14300</CurrentTaxYearMinus1YearAmt>
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        <ContributorUSAddress>
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          <AddressLine2>RESTRICTED</AddressLine2>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 1A:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MUSEUM DOES NOT CAPITALIZE ITS COLLECTION NOR RECORD THE VALUE OF ACQUISITIONS AS REVENUE. HOWEVER OBJECTS USED ON THE INTERPRETIVE RAILWAY ARE CAPITALIZED AND DEPRECIATED TO REPRESENT THE CONSUMPTIVE NATURE OF OPERATING ARTIFACTS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III, LINE 4:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MUSEUM COLLECTS, EXHIBITS AND CARES FOR ARTIFACTS REPRESENTATIVE OF THE ROLE RAILROADS PLAYED IN THE SETTLEMENT AND DEVELOPMENT OF THE REGION, AND THAT ALLOW THE VISITING PUBLIC TO EXPERIENCE THE EXCITEMENT OF A WORKING RAILWAY.</ExplanationTxt>
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        <Form8038TFiledInd>0</Form8038TFiledInd>
        <RebateNotDueYetInd>0</RebateNotDueYetInd>
        <ExceptionToRebateInd>1</ExceptionToRebateInd>
        <NoRebateDueInd>0</NoRebateDueInd>
        <VariableRateIssueInd>1</VariableRateIssueInd>
        <HedgeIdentifiedInBksAndRecInd>0</HedgeIdentifiedInBksAndRecInd>
        <GrossProceedsInvestedInGICInd>0</GrossProceedsInvestedInGICInd>
        <GrossProceedsInvestedInd>0</GrossProceedsInvestedInd>
        <WrittenProcToMonitorReqsInd>1</WrittenProcToMonitorReqsInd>
      </TaxExemptBondsArbitrageGrp>
      <ProceduresCorrectiveActionGrp>
        <BondReferenceCd>A</BondReferenceCd>
        <ProceduresCorrectiveActionInd>1</ProceduresCorrectiveActionInd>
      </ProceduresCorrectiveActionGrp>
    </IRS990ScheduleK>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>4</ContributionCnt>
        <NoncashContributionsRptF990Amt>19361</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <CollectiblesGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>1480</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </CollectiblesGrp>
      <HistoricalArtifactsGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>2</ContributionCnt>
        <MethodOfDeterminingRevenuesTxt>ASC 958-360-25</MethodOfDeterminingRevenuesTxt>
      </HistoricalArtifactsGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>TOOLS FOR USE</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>5592</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>PURCHASE RECEIPTS</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <OtherNonCashContriTableGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <Desc>COMPUTER EQUIP.</Desc>
        <ContributionCnt>1</ContributionCnt>
        <NoncashContributionsRptF990Amt>1055</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </OtherNonCashContriTableGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>1</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART I, COLUMN (B):</FormAndLineReferenceDesc>
        <ExplanationTxt>THE AMOUNTS REPORTED IN SCHEDULE M, PART I, COLUMN (B) REPRESENT THE NUMBER OF CONTRIBUTIONS RECEIVED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART I, LINE 6:</FormAndLineReferenceDesc>
        <ExplanationTxt>VOLUNTEERS STAFFED PROGRAMS, INCLUDING OPERATION OF TRAINS AND ENGINES, REHABILITATION OF ARTIFACTS, CATALOGING WORK, GROUNDS-KEEPING, CLERICAL SERVICES, AND DIESEL AND STEAM MECHANICS AND MACHINISTS. IN 2024 THEY CONTRIBUTED A COMBINED 15,113 HOURS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>REVIEW OF THE FORM 990 CONSISTS OF A SHORT PRESENTATION ABOUT THE RETURN TO THE BOARD OF TRUSTEES. THE TRUSTEES GO THROUGH THE RETURN LINE BY LINE AND HAVE THE OPPORTUNITY TO ASK QUESTIONS, DISCUSS ANYTHING THEY DO NOT UNDERSTAND, AND AT THE COMPLETION OF THE PRESENTATION GIVE A FORMAL APPROVAL FOR ITS SUBMISSION TO THE TAX AUTHORITY, OR IN THE ALTERNATIVE, GIVE DIRECTION ON WHAT ADDITIONAL INFORMATION IS REQUIRED BEFORE THEY WILL GRANT APPROVAL TO FILE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CONFLICT OF INTEREST POLICY APPLIES TO TRUSTEES AND KEY EMPLOYEES. A QUESTIONNAIRE IS COMPLETED BY THE RESPECTIVE INDIVIDUALS TO DETERMINE IF FURTHER INVESTIGATION OF CONFLICTS IS REQUIRED AND IS REVIEWED BY THE BOARD. IF THE APPEARANCE OR OTHER INDICATION OF A CONFLICT ARISES WITH AN INDIVIDUAL, THE BOARD SITTING AS A COMMITTEE OF THE WHOLE DECIDES IF THERE IS A CONFLICT, AND IF SO, WHAT ACTION IS REQUIRED. ACTION MAY INCLUDE THE RECUSAL OF THE INTERESTED PARTY FROM THE DECISION MAKING PROCESS. THE APPEARANCE OR OTHER INDICATION OF A CONFLICT IS REPORTED THROUGH THE EXECUTIVE DIRECTOR WHO ALSO ADMINISTERS THE ANNUAL SURVEY QUESTIONNAIRE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>COMPENSATION FOR THE EXECUTIVE DIRECTOR IS REVIEWED BY INDEPENDENT MEMBERS OF THE BOARD AND COMPARABILITY DATA IS OBTAINED FROM 990 FILINGS OF OTHER SIMILAR ORGANIZATIONS, INDUSTRY SALARY SURVEYS, AND SALARY RANGES POSTED IN JOB LISTINGS. THE COMPENSATION POLICY WAS LAST REVIEWED IN NOVEMBER 2021. THERE WAS SALARY REVIEW AND ADJUSTMENT IN 2023. THERE ARE NO OTHER KEY EMPLOYEES OR OFFICES IN THE ORGANIZATION WHO RECEIVE COMPENSATION.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION'S GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>