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        <CurrentTaxYearMinus4YearsAmt>45850</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>4107</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>4060</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>1384</CurrentTaxYearAmt>
        <TotalAmt>55401</TotalAmt>
      </GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp>
        <CurrentTaxYearMinus4YearsAmt>62020</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>2985</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>99710</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>151514</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>137565</CurrentTaxYearAmt>
        <TotalAmt>453794</TotalAmt>
      </GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp>
        <CurrentTaxYearMinus3YearsAmt>99479</CurrentTaxYearMinus3YearsAmt>
        <TotalAmt>99479</TotalAmt>
      </GrossReceiptsNonUnrltBusGrp>
      <Total509Grp>
        <CurrentTaxYearMinus4YearsAmt>107870</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>102464</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>103817</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>155574</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>138949</CurrentTaxYearAmt>
        <TotalAmt>608674</TotalAmt>
      </Total509Grp>
      <PublicSupportTotal509Amt>608674</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp>
        <CurrentTaxYearMinus3YearsAmt>50600</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>53560</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>54500</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>56735</CurrentTaxYearAmt>
        <TotalAmt>215395</TotalAmt>
      </GrossInvestmentIncome509Grp>
      <InvestmentIncomeAndUBTIGrp>
        <CurrentTaxYearMinus3YearsAmt>50600</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>53560</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>54500</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>56735</CurrentTaxYearAmt>
        <TotalAmt>215395</TotalAmt>
      </InvestmentIncomeAndUBTIGrp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>107870</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>153064</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>157377</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>210074</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>195684</CurrentTaxYearAmt>
        <TotalAmt>824069</TotalAmt>
      </TotalSupportCalendarYearGrp>
      <PublicSupportCY509Pct>0.73860</PublicSupportCY509Pct>
      <PublicSupportPY509Pct>0.77760</PublicSupportPY509Pct>
      <InvestmentIncomeCYPct>0.26000</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0.22000</InvestmentIncomePYPct>
      <ThirtyThrPctSuprtTestsCY509Ind>X</ThirtyThrPctSuprtTestsCY509Ind>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="RetDoc3">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE MISSION OF THE MAINE LIGHTHOUSE MUSEUM IS TO EDUCATE THE PUBLIC REGARDING THE LONG-STANDING TRADITIONS, HEROISM AND PROGRESS OF AMERICA'S LIGHTHOUSE AND LIFESAVING SERVICES AND THE UNITED STATES COAST GUARD THROUGH THE CONSERVATION AND INTERPRETATION OF THE NATION'S MOST SIGNIFICANT COLLECTION OF LIGHTHOUSE AND LIFESAVING ARTIFACTS. PRESERVE AND EXHIBIT HISTORIC LIGHTHOUSE MEMORABILIA</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>PRESERVE AND EXHIBIT HISTORIC LIGHTHOUSE MEMORABILIA</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>NO REVIEW WAS OR WILL BE CONDUCTED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>NO DOCUMENTS AVAILABLE TO THE PUBLIC</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>