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        <CurrentTaxYearMinus2YearsAmt>74665</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>136731</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>278915</CurrentTaxYearAmt>
        <TotalAmt>608943</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>57948</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>60684</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>74665</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>136731</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>278915</CurrentTaxYearAmt>
        <TotalAmt>608943</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>608943</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp>
        <CurrentTaxYearMinus4YearsAmt>41989</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>10889</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>114432</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>107123</CurrentTaxYearMinus1YearAmt>
        <TotalAmt>274433</TotalAmt>
      </GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp>
        <CurrentTaxYearMinus1YearAmt>75244</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>25581</CurrentTaxYearAmt>
        <TotalAmt>100825</TotalAmt>
      </UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp>
        <CurrentTaxYearMinus2YearsAmt>29491</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>54528</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>79022</CurrentTaxYearAmt>
        <TotalAmt>163041</TotalAmt>
      </OtherIncome170Grp>
      <TotalSupportAmt>1147242</TotalSupportAmt>
      <GrossReceiptsRltdActivitiesAmt>31128</GrossReceiptsRltdActivitiesAmt>
      <PublicSupportCY170Pct>0.53080</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0.46870</PublicSupportPY170Pct>
      <ThirtyThrPctSuprtTestsCY170Ind>X</ThirtyThrPctSuprtTestsCY170Ind>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART II, LINE 10</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER INCOME 84,019</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1">
      <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="RetDoc4">
      <LandGrp>
        <OtherCostOrOtherBasisAmt>104500</OtherCostOrOtherBasisAmt>
        <BookValueAmt>104500</BookValueAmt>
      </LandGrp>
      <BuildingsGrp>
        <OtherCostOrOtherBasisAmt>1130762</OtherCostOrOtherBasisAmt>
        <DepreciationAmt>961684</DepreciationAmt>
        <BookValueAmt>169078</BookValueAmt>
      </BuildingsGrp>
      <TotalBookValueLandBuildingsAmt>273578</TotalBookValueLandBuildingsAmt>
    </IRS990ScheduleD>
    <IRS990ScheduleO documentId="RetDoc5">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE SWEET HOUSE FOUNDATION OBJECTIVE IS TO PRESERVE, MAINTAIN, AND SHARE THE HISTORIC HOUSE OF MARTIN SWEET LOCATED AT 254 FULTON STREET E, GRAND RAPIDS, MICHIGAN. THE FOUNDATION IS DEDICATED TO EDUCATING THE PUBLIC ABOUT EXTENSIVE CONTRIBUTIONS OF MARTIN SWEET, THE DEVELOPMENT OF EARLY GRAND RAPIDS AND THE HISTORICAL ACCOMPLISHMENTS OF SUBSEQUENT OCCUPANTS OF THE HOUSE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>EVENT EXPENSES HELD AT THE SWEET HOUSE.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS REVIEWED AND VOTED UPON BY THE GOVERNING BOARD.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 18</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FORM 990 IS AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>FINANCIAL STATEMENTS ARE AVAILABLE FOR INSPECTION DURING NORMAL BUSINESS HOURS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART XI, LINE 9</FormAndLineReferenceDesc>
        <ExplanationTxt>BOOK / TAX DEPRECIATION DIFFERENCE 17,799</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
  </ReturnData>
</Return>
