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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>DONALD MARTIN</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>PATRICE MILLER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ELIZABETH MOOSE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>TALLI OXNAM</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>BRUCE RAGSDALE</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>DAVID REAGER</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>CHARLES ROBERTSON</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>D BRUCE RODGERS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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        <ReportableCompFromRltdOrgAmt>0</ReportableCompFromRltdOrgAmt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>LELDE SCHMITZ</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>JOHN SEIDEL</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      </Form990PartVIISectionAGrp>
      <Form990PartVIISectionAGrp>
        <PersonNm>ENOS THROOP V</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>RICHARD TILGHMAN JR</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>SUSAN WHEELER</PersonNm>
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      <Form990PartVIISectionAGrp>
        <PersonNm>CAROLYN WILLIAMS</PersonNm>
        <TitleTxt>DIRECTOR</TitleTxt>
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      <Form990PartVIISectionAGrp>
        <PersonNm>KRISTEN GREENAWAY</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
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      <ProgramServiceRevenueGrp>
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        <UnrelatedBusinessRevenueAmt>162657</UnrelatedBusinessRevenueAmt>
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        <BusinessCd>900099</BusinessCd>
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        <RelatedOrExemptFuncIncomeAmt>717</RelatedOrExemptFuncIncomeAmt>
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        <UnrelatedBusinessRevenueAmt>92480</UnrelatedBusinessRevenueAmt>
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        <ManagementAndGeneralAmt>79789</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>7579</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>721967</ManagementAndGeneralAmt>
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        <EOYAmt>45020</EOYAmt>
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        <EOYAmt>573290</EOYAmt>
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      <MethodOfAccountingAccrualInd>X</MethodOfAccountingAccrualInd>
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      <FSAuditedInd>true</FSAuditedInd>
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        <CurrentTaxYearMinus2YearsAmt>4005364</CurrentTaxYearMinus2YearsAmt>
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        <CurrentTaxYearAmt>4453033</CurrentTaxYearAmt>
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      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>1211478</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1348731</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1196143</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>1493322</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1322656</CurrentTaxYearAmt>
        <TotalAmt>6572330</TotalAmt>
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      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>3414895</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>4678868</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>5201507</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>5517355</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>5775689</CurrentTaxYearAmt>
        <TotalAmt>24588314</TotalAmt>
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      <AmountsRcvdDsqlfyPersonGrp>
        <CurrentTaxYearMinus4YearsAmt>437255</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>1487180</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>1080548</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>485546</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>680331</CurrentTaxYearAmt>
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        <TotalAmt>4170860</TotalAmt>
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        <CurrentTaxYearMinus2YearsAmt>263396</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>272920</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>359562</CurrentTaxYearAmt>
        <TotalAmt>1595555</TotalAmt>
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      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus4YearsAmt>273498</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>426179</CurrentTaxYearMinus3YearsAmt>
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        <CurrentTaxYearMinus1YearAmt>272920</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>359562</CurrentTaxYearAmt>
        <TotalAmt>1595555</TotalAmt>
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      <OtherIncome509Grp>
        <CurrentTaxYearMinus4YearsAmt>50776</CurrentTaxYearMinus4YearsAmt>
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        <CurrentTaxYearMinus1YearAmt>123461</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>177602</CurrentTaxYearAmt>
        <TotalAmt>558480</TotalAmt>
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        <CurrentTaxYearMinus3YearsAmt>5125023</CurrentTaxYearMinus3YearsAmt>
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        <CurrentTaxYearMinus1YearAmt>5913736</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>6312853</CurrentTaxYearAmt>
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      <PublicSupportPY509Pct>0.74510</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.06000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.07000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="990B">
      <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>
      </ContributorInformationGrp>
    </IRS990ScheduleB>
    <IRS990ScheduleD documentId="990D">
      <HistoricStructureInd>X</HistoricStructureInd>
      <TotalEasementsCnt>1</TotalEasementsCnt>
      <TotalAcreageCnt>0.14</TotalAcreageCnt>
      <HistoricStructureEasementsCnt>1</HistoricStructureEasementsCnt>
      <StatesEasementsHeldCnt>1</StatesEasementsHeldCnt>
      <WrittenPolicyMonitoringInd>false</WrittenPolicyMonitoringInd>
      <CollectionUsedPubExhibitionInd>X</CollectionUsedPubExhibitionInd>
      <CollUsedScholarlyRsrchInd>X</CollUsedScholarlyRsrchInd>
      <CollectionUsedPreservationInd>X</CollectionUsedPreservationInd>
      <SolicitedAssetsSaleInd>false</SolicitedAssetsSaleInd>
      <CYEndwmtFundGrp>
        <BeginningYearBalanceAmt>11623982</BeginningYearBalanceAmt>
        <ContributionsAmt>119312</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>1073125</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>500000</OtherExpendituresAmt>
        <EndYearBalanceAmt>12316419</EndYearBalanceAmt>
      </CYEndwmtFundGrp>
      <CYMinus1YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>10559387</BeginningYearBalanceAmt>
        <ContributionsAmt>128296</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>1436299</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>500000</OtherExpendituresAmt>
        <EndYearBalanceAmt>11623982</EndYearBalanceAmt>
      </CYMinus1YrEndwmtFundGrp>
      <CYMinus2YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>11454741</BeginningYearBalanceAmt>
        <ContributionsAmt>379560</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>-774914</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>500000</OtherExpendituresAmt>
        <EndYearBalanceAmt>10559387</EndYearBalanceAmt>
      </CYMinus2YrEndwmtFundGrp>
      <CYMinus3YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>11610556</BeginningYearBalanceAmt>
        <ContributionsAmt>320186</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>440666</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>916667</OtherExpendituresAmt>
        <EndYearBalanceAmt>11454741</EndYearBalanceAmt>
      </CYMinus3YrEndwmtFundGrp>
      <CYMinus4YrEndwmtFundGrp>
        <BeginningYearBalanceAmt>10583904</BeginningYearBalanceAmt>
        <ContributionsAmt>724463</ContributionsAmt>
        <InvestmentEarningsOrLossesAmt>802189</InvestmentEarningsOrLossesAmt>
        <OtherExpendituresAmt>500000</OtherExpendituresAmt>
        <EndYearBalanceAmt>11610556</EndYearBalanceAmt>
      </CYMinus4YrEndwmtFundGrp>
      <BoardDesignatedBalanceEOYPct>0.09850</BoardDesignatedBalanceEOYPct>
      <PrmnntEndowmentBalanceEOYPct>0.79880</PrmnntEndowmentBalanceEOYPct>
      <TermEndowmentBalanceEOYPct>0.10260</TermEndowmentBalanceEOYPct>
      <EndowmentsHeldUnrelatedOrgInd>false</EndowmentsHeldUnrelatedOrgInd>
      <EndowmentsHeldRelatedOrgInd>false</EndowmentsHeldRelatedOrgInd>
      <LandGrp>
        <OtherCostOrOtherBasisAmt>870859</OtherCostOrOtherBasisAmt>
        <BookValueAmt>870859</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>13354258</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>6539226</DepreciationAmt>
        <BookValueAmt>6815032</BookValueAmt>
      </BuildingsGrp>
      <EquipmentGrp>
        <OtherCostOrOtherBasisAmt>810322</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>682638</DepreciationAmt>
        <BookValueAmt>127684</BookValueAmt>
      </EquipmentGrp>
      <OtherLandBuildingsGrp>
        <OtherCostOrOtherBasisAmt>8152178</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>6440004</DepreciationAmt>
        <BookValueAmt>1712174</BookValueAmt>
      </OtherLandBuildingsGrp>
      <TotalBookValueLandBuildingsAmt>9525749</TotalBookValueLandBuildingsAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <TotalRevEtcAuditedFinclStmtAmt>6920584</TotalRevEtcAuditedFinclStmtAmt>
      <NetUnrealizedGainsInvstAmt>754730</NetUnrealizedGainsInvstAmt>
      <OtherRevenueAmt>485971</OtherRevenueAmt>
      <RevenueNotReportedAmt>1240701</RevenueNotReportedAmt>
      <RevenueSubtotalAmt>5679883</RevenueSubtotalAmt>
      <TotalRevenuePerForm990Amt>5679883</TotalRevenuePerForm990Amt>
      <TotExpnsEtcAuditedFinclStmtAmt>4937832</TotExpnsEtcAuditedFinclStmtAmt>
      <OtherExpensesIncludedAmt>485971</OtherExpensesIncludedAmt>
      <ExpensesNotReportedAmt>485971</ExpensesNotReportedAmt>
      <ExpensesSubtotalAmt>4451861</ExpensesSubtotalAmt>
      <TotalExpensesPerForm990Amt>4451861</TotalExpensesPerForm990Amt>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Reports conservation easements (Part II, line 9)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE STATE OF MARYLAND RETAINS A HISTORICAL EASEMENT ON A SMALL BOAT SHED. THE SMALL BOAT SHED IS REPORTED ON THE STATEMENT OF FINANCIAL POSITION AT COST AND IS DEPRECIATED OVER ITS ESTIMATED USEFUL LIFE BY A LEVEL CHARGE (STRAIGHT-LINE METHOD) TO FIXED ASSET FUND EXPENDITURES. THE SMALL BOAT SHED IS FULLY DEPRECIATED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Not reporting collections (Part III, line 1a)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE COLLECTION, WHICH HAS BEEN ACQUIRED THROUGH PURCHASES AND CONTRIBUTIONS SINCE THE MUSEUMS INCEPTION, IS NOT RECOGNIZED AS AN ASSET ON THE STATEMENTS OF FINANCIAL POSITION. PURCHASES OF COLLECTION ITEMS ARE RECORDED AS DECREASES IN UNRESTRICTED NET ASSETS IF THE ASSETS USED TO PURCHASE THE ITEMS ARE ACQUIRED, OR AS A TEMPORARILY OR PERMANENTLY RESTRICTED NET ASSETS IF THE ASSETS USED TO PURCHASE THE ITEMS ARE RESTRICTED BY DONORS. CONTRIBUTED COLLECTION ITEMS ARE NOT REFLECTED ON THE FINANCIAL STATEMENTS. PROCEEDS FROM DEACCESSIONS OR INSURANCE RECOVERIES ARE REFLECTED AS CHANGES IN THE APPROPRIATE NET ASSET CLASSES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Collections descriptions (Part III, line 4)</FormAndLineReferenceDesc>
        <ExplanationTxt>COLLECTING HISTORICAL OBJECTS, PHOTOGRAPHS, MANUSCRIPTS, AND ORAL HISTORIES TOGETHER WITH CONTEXTUAL INFORMATION ABOUT THEM ENABLES THE MUSEUM TO EDUCATE ITS VARIOUS PUBLIC AUDIENCES THROUGH THE USE OF THESE COLLECTIONS IN LONG-TERM AND CHANGING EXHIBITIONS AS WELL AS PROGRAMS. THE PRESERVATION OF THESE COLLECTIONS IS PARAMOUNT TO ENSURE THAT THE MUSEUM CAN CONTINUE TO CARRY OUT ITS EDUCATIONAL MISSION FOR FUTURE GENERATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Endowment funds intended uses (Part V, line 4)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ENDOWMENT IS INTENDED TO BE USED FOR THE OBJECTIVES AND PURPOSES OF THE MUSEUM. NAMED FUNDS ARE ESTABLISHED WITHIN THE ENDOWMENT TO FIT SPECIFIC PURPOSES SUCH AS WATERFOWL, MAINTENANCE, LIGHTHOUSE, EDUCATION ETC., WHICH MEET THESE PURPOSES AND OBJECTIVES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other revenues not included on Form 990 (Part XI, line 2d)</FormAndLineReferenceDesc>
        <ExplanationTxt>RECLASSIFICATION OF FUNDRAISING EVENT EXPENSES $ 84,766RECLASSIFICATION OF RENTAL EXPENSES $401,205</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other expenses not included on Form 990 (Part XII, line 2d)</FormAndLineReferenceDesc>
        <ExplanationTxt>RECLASSIFICATION OF FUNDRAISING EVENT EXPENSES $ 84,766RECLASSIFICATION OF RENTAL EXPENSES $401,205</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Footnote for uncertain tax position under FIN 48 (Part X)</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MUSEUM IS EXEMPT FROM INCOME TAXES UNDER INTERNAL REVENUE CODE 501(C)(3). IN ADDITION, THE MUSEUM HAS BEEN CLASSIFIED AS AN ORGANIZATION THAT IS NOT A PRIVATE FOUNDATION UNDER SECTION 509(A)(1). A PORTION OF THE INCOME FROM THE MUSEUM STORE, CERTAIN DOCKING FEES, AND PROPERTY RENTALS MAY BE SUBJECT TO FEDERAL AND STATE INCOMES TAXES. FOR THE YEAR ENDED FEBRUARY 28, 2018, NO INCOME TAXES WERE DUE.THE MUSEUMS INFORMATIONAL RETURN IS SUBJECT TO EXAMINATION BY THE INTERNAL REVENUE SERVICE AND THE STATE OF MARYLAND, GENERALLY FOR THE THREE YEARS AFTER IT IS FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleG documentId="990G">
      <FundraisingEventInformationGrp>
        <Event1Nm>BOATING PART</Event1Nm>
        <GrossReceiptsEvent1Amt>277897</GrossReceiptsEvent1Amt>
        <CharitableContriEvent1Amt>131550</CharitableContriEvent1Amt>
        <GrossRevenueEvent1Amt>146347</GrossRevenueEvent1Amt>
        <NonCashPrizesEvent1Amt>9136</NonCashPrizesEvent1Amt>
        <RentFacilityCostsEvent1Amt>13539</RentFacilityCostsEvent1Amt>
        <FoodAndBeverageEvent1Amt>39912</FoodAndBeverageEvent1Amt>
        <EntertainmentEvent1Amt>6600</EntertainmentEvent1Amt>
        <OtherDirectExpensesEvent1Amt>15579</OtherDirectExpensesEvent1Amt>
        <GrossReceiptsTotalAmt>277897</GrossReceiptsTotalAmt>
        <CharitableContributionsTotAmt>131550</CharitableContributionsTotAmt>
        <GrossRevenueTotalEventsAmt>146347</GrossRevenueTotalEventsAmt>
        <NonCashPrizesTotalEventsAmt>9136</NonCashPrizesTotalEventsAmt>
        <RentFcltyCostsTotalEventsAmt>13539</RentFcltyCostsTotalEventsAmt>
        <FoodAndBeverageTotalEventsAmt>39912</FoodAndBeverageTotalEventsAmt>
        <EntertainmentTotalEventsAmt>6600</EntertainmentTotalEventsAmt>
        <OthDirectExpnssTotalEventsAmt>15579</OthDirectExpnssTotalEventsAmt>
        <DirectExpenseSummaryEventsAmt>84766</DirectExpenseSummaryEventsAmt>
        <NetIncomeSummaryAmt>61581</NetIncomeSummaryAmt>
      </FundraisingEventInformationGrp>
    </IRS990ScheduleG>
    <IRS990ScheduleJ documentId="990J">
      <CompensationCommitteeInd>X</CompensationCommitteeInd>
      <Form990OfOtherOrganizationsInd>X</Form990OfOtherOrganizationsInd>
      <WrittenEmploymentContractInd>X</WrittenEmploymentContractInd>
      <CompensationSurveyInd>X</CompensationSurveyInd>
      <BoardOrCommitteeApprovalInd>X</BoardOrCommitteeApprovalInd>
      <SeverancePaymentInd>false</SeverancePaymentInd>
      <SupplementalNonqualRtrPlanInd>false</SupplementalNonqualRtrPlanInd>
      <EquityBasedCompArrngmInd>false</EquityBasedCompArrngmInd>
      <CompBasedOnRevenueOfFlngOrgInd>false</CompBasedOnRevenueOfFlngOrgInd>
      <CompBsdOnRevRelatedOrgsInd>false</CompBsdOnRevRelatedOrgsInd>
      <CompBsdNetEarnsFlngOrgInd>false</CompBsdNetEarnsFlngOrgInd>
      <CompBsdNetEarnsRltdOrgsInd>false</CompBsdNetEarnsRltdOrgsInd>
      <AnyNonFixedPaymentsInd>false</AnyNonFixedPaymentsInd>
      <InitialContractExceptionInd>false</InitialContractExceptionInd>
      <RltdOrgOfficerTrstKeyEmplGrp>
        <PersonNm>KRISTEN GREENAWAY</PersonNm>
        <TitleTxt>PRESIDENT</TitleTxt>
        <BaseCompensationFilingOrgAmt>194757</BaseCompensationFilingOrgAmt>
        <DeferredCompensationFlngOrgAmt>13869</DeferredCompensationFlngOrgAmt>
        <NontaxableBenefitsFilingOrgAmt>9365</NontaxableBenefitsFilingOrgAmt>
        <TotalCompensationFilingOrgAmt>217991</TotalCompensationFilingOrgAmt>
      </RltdOrgOfficerTrstKeyEmplGrp>
    </IRS990ScheduleJ>
    <IRS990ScheduleM documentId="990M">
      <BoatsAndPlanesGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>207</ContributionCnt>
        <NoncashContributionsRptF990Amt>1342503</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FAIR MARKET VALUE</MethodOfDeterminingRevenuesTxt>
      </BoatsAndPlanesGrp>
      <Form8283ReceivedCnt>44</Form8283ReceivedCnt>
      <AnyPropertyThatMustBeHeldInd>false</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>true</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>false</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="990O">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Member election for additional members Part VI line 7a</FormAndLineReferenceDesc>
        <ExplanationTxt>THE BOARD OF GOVERNORS, WHO ARE ALSO MEMBERS, IS THE ONLY GOVERNING BODY THAT HAS THE AUTHORITY TO ELECT NEW GOVERNORS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990 governing body review Part VI line 11</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS INITIALLY REVIEWED BY THE ORGANIZATIONS VICE PRESIDENT OF FINANCE. AFTER THE INITIAL REVIEW THE FORM 990 IS REVIEWED AND APPROVED BY THE BOARD OF DIRECTORS PRIOR TO SUBMISSION WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Conflict of interest policy compliance Part VI line 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>ALL BOARD MEMBERS ARE REQUIRED TO COMPLETE A CONFLICT OF INTEREST FORM ANNUALLY AND DISCLOSE ANY RELATIONSHIPS WITH THE MUSEUM. NEW BOARD MEMBERS AND KEY EMPLOYEES ARE ALSO REQUIRED TO COMPLETE THIS FORM.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>CEO executive director top management comp Part VI line 15a</FormAndLineReferenceDesc>
        <ExplanationTxt>EACH FISCAL YEAR, PREFERABLY NOT CONTEMPORANEOUSLY WITH THE PERFORMANCE REVIEW, THE CHAIR, IN CONSULTATION WITH THE EXECUTIVE COMMITTEE, SHALL SET THE COMPENSATION OF THE PRESIDENT AND CEO FOR THE ENSUING 12 MONTHS. IN DOING SO, THE CHAIR SHALL TAKE INTO ACCOUNT PERFORMANCE, TENURE, CHANGES IN THE COST-OF-LIVING INDEX, COMPENSATION OF COMPARABLE NOT-FOR-PROFIT ORGANIZATIONS, THE FINANCIAL CONDITION OF CBMM AND OTHER FACTORS AS THE CHAIR AND THE EXECUTIVE COMMITTEE MAY DEEM APPROPRIATE. EXCEPT IN EXTRAORDINARY CIRCUMSTANCES AND THEN ONLY IF APPROVED BY THE BOARD OF GOVERNORS, THE COMPENSATION OF THE PRESIDENT AND CEO SHALL NOT EXCEED THE RANGE OF COMPENSATION OF THE CEO OF COMPARABLE ORGANIZATIONS, AS SET FORTH IN THE MOST RECENT COMPENSATION REPORT OF CHARITY NAVIGATOR OR OTHER INDEPENDENT ENTITY THAT GATHERS AND REPORTS ON THE COMPENSATION OF CEOS OF NOT-FOR-PROFIT ORGANIZATIONS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Governing documents etc available to public Part VI line 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATIONS GOVERNING DOCUMENTS, CONFLICT OF INTEREST POLICY, AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST. THE ANNUAL REPORT IS ALSO AVAILABLE ON THE ORGANIZATIONS WEBSITE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>General explanation attachment</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 - ORGANIZATIONS MISSIONTHE MISSION OF THE CHESAPEAKE BAY MARITIME MUSEUM IS TO PRESERVE AND EXPLORE THE HISTORY, ENVIRONMENT, AND PEOPLE OF THE CHESAPEAKE BAY. THE VISION OF THE CHESAPEAKE BAY MARITIME MUSEUM IS TO BE THE PREMIER MARITIME MUSEUM FOR STUDYING, EXHIBITING, PRESERVING, AND CELEBRATING THE IMPORTANT HISTORY AND CULTURE OF THE LARGEST ESTUARY IN THE UNITED STATES, THE CHESAPEAKE BAY.CBMM IS ACKNOWLEDGED AS A LEADING CENTER FOR EDUCATION, EXHIBITION, AND PRESERVATION OF CHESAPEAKE BAY MARITIME CULTURES. CBMM INSPIRES CULTURAL STEWARDSHIP BY PRESERVING, DOCUMENTING, AND SHARING STORIES, ARTIFACTS, SKILLS, AND THE TRADITIONS OF THE GENERATIONS OF PEOPLE WHO HAVE LIVED AND WORKED IN THE CHESAPEAKE BAY REGION. CBMM EMPHASIZES HOW THE CONNECTIONS BETWEEN PEOPLE AND THE BAYS NATURAL ENVIRONMENT HAVE SHAPED UNIQUE, TRADITIONAL CULTURES. CBMM PROVIDES OPPORTUNITIES FOR VISITORS TO MAKE CONNECTIONS BETWEEN PAST HUMAN ACTIVITIES, PRESENT CONDITIONS, AND FUTURE POSSIBILITIES.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>