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      <Form990SchAType1SuprtOrgGrp>
        <PowerAppointMajorityDirTrstInd>1</PowerAppointMajorityDirTrstInd>
        <OperateBenefitNonSuprtOrgInd>0</OperateBenefitNonSuprtOrgInd>
      </Form990SchAType1SuprtOrgGrp>
      <Form990ScheduleAPartVIGrp>
        <FormAndLineReferenceDesc>PART IV, SECTION A, LINE 11:</FormAndLineReferenceDesc>
        <ExplanationTxt>WILLIAM N. THORNDIKE JR. AND GENEVA S. THORNDIKE DONATED CASH AND STOCK. DETAIL IS STATED IN SCHEDULE B.</ExplanationTxt>
      </Form990ScheduleAPartVIGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleB documentId="RetDoc1234500001">
      <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="RetDoc1040000001">
      <TotalBookValueLandBuildingsAmt>0</TotalBookValueLandBuildingsAmt>
      <OtherSecuritiesGrp>
        <Desc>PRIVATE INVESTMENTS</Desc>
        <BookValueAmt>29691117</BookValueAmt>
        <MethodValuationCd>F</MethodValuationCd>
      </OtherSecuritiesGrp>
      <TotalBookValueSecuritiesAmt>29691117</TotalBookValueSecuritiesAmt>
      <FootnoteTextInd>X</FootnoteTextInd>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART X, LINE 2:</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FOUNDATION IS A SUPPORTING ORGANIZATION EXEMPT FROM INCOME TAXES IN ACCORDANCE WITH SECTIONS 501(C)(3) AND 509(A)(3) OF THE INTERNAL REVENUE CODE (IRC). MANAGEMENT BELIEVES THAT THE FOUNDATION OPERATES IN A MANNER CONSISTENT WITH ITS TAX-EXEMPT STATUS AT BOTH THE FEDERAL AND STATE LEVELS. THE FOUNDATION ANNUALLY FILES IRS FORM 990, RETURN OF ORGANIZATION EXEMPT FROM INCOME TAX, REPORTING VARIOUS INFORMATION THAT THE IRS USES TO MONITOR THE ACTIVITIES OF TAX-EXEMPT ENTITIES. THESE TAX RETURNS ARE SUBJECT TO REVIEW BY THE TAXING AUTHORITIES, GENERALLY FOR A PERIOD OF THREE YEARS AFTER THEY WERE FILED. THE FOUNDATION CURRENTLY HAS NO TAX EXAMINATIONS IN PROGRESS.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleD>
    <IRS990ScheduleI documentId="RetDoc1041900001">
      <GrantRecordsMaintainedInd>0</GrantRecordsMaintainedInd>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>KIDS ALIVE INTERNATIONAL</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>2555 NORTHWINDS PARKWAY SUITE 1300</AddressLine1Txt>
          <CityNm>ALPHARETTA</CityNm>
          <StateAbbreviationCd>GA</StateAbbreviationCd>
          <ZIPCd>30009</ZIPCd>
        </USAddress>
        <RecipientEIN>311140515</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>SPECIAL PROJECT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MIRACLEFEET</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>107 CONNER DRIVE STE 230</AddressLine1Txt>
          <CityNm>CHAPEL HILL</CityNm>
          <StateAbbreviationCd>NC</StateAbbreviationCd>
          <ZIPCd>27514</ZIPCd>
        </USAddress>
        <RecipientEIN>273764203</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>CHILDREN'S TUMOR FOUNDATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>697 THIRD AVENUE SUITE 418</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10017</ZIPCd>
        </USAddress>
        <RecipientEIN>132298956</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>HEALTHY ACADIA</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 1710</AddressLine1Txt>
          <CityNm>ELLSWORTH</CityNm>
          <StateAbbreviationCd>ME</StateAbbreviationCd>
          <ZIPCd>04605</ZIPCd>
        </USAddress>
        <RecipientEIN>270548057</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>10000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>SPECIAL PROJECT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>MOUNT DESERT LAND AND GARDEN PRESERVE</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 208</AddressLine1Txt>
          <CityNm>SEAL HARBOR</CityNm>
          <StateAbbreviationCd>ME</StateAbbreviationCd>
          <ZIPCd>04675</ZIPCd>
        </USAddress>
        <RecipientEIN>237102758</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>NORTH BENNET STREET SCHOOL</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>150 NORTH STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02109</ZIPCd>
        </USAddress>
        <RecipientEIN>042103830</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>SOCIETY FOR THE PRESERVATION OF NEW ENGLAND ANTIQUITIES</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>141 CAMBRIDGE STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02114</ZIPCd>
        </USAddress>
        <RecipientEIN>042104937</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>WGBH EDUCATIONAL FOUNDATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>ONE GUEST STREET</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02135</ZIPCd>
        </USAddress>
        <RecipientEIN>042104397</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>25000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>AUTHOR'S GUILD FOUNDATION</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>31 E 32ND ST SUITE 901</AddressLine1Txt>
          <CityNm>NEW YORK</CityNm>
          <StateAbbreviationCd>NY</StateAbbreviationCd>
          <ZIPCd>10016</ZIPCd>
        </USAddress>
        <RecipientEIN>237248599</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>50000</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <RecipientTable>
        <RecipientBusinessName>
          <BusinessNameLine1Txt>VITAL CXNS INC</BusinessNameLine1Txt>
        </RecipientBusinessName>
        <USAddress>
          <AddressLine1Txt>PO BOX 320421</AddressLine1Txt>
          <CityNm>WEST ROXBURY</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02132</ZIPCd>
        </USAddress>
        <RecipientEIN>301255787</RecipientEIN>
        <IRCSectionDesc>501(C)(3)</IRCSectionDesc>
        <CashGrantAmt>176667</CashGrantAmt>
        <NonCashAssistanceAmt>0</NonCashAssistanceAmt>
        <PurposeOfGrantTxt>GENERAL SUPPORT</PurposeOfGrantTxt>
      </RecipientTable>
      <Total501c3OrgCnt>15</Total501c3OrgCnt>
    </IRS990ScheduleI>
    <IRS990ScheduleM documentId="RetDoc1042900001">
      <SecuritiesPubliclyTradedGrp>
        <NonCashCheckboxInd>X</NonCashCheckboxInd>
        <ContributionCnt>4</ContributionCnt>
        <NoncashContributionsRptF990Amt>14976490</NoncashContributionsRptF990Amt>
        <MethodOfDeterminingRevenuesTxt>FMV</MethodOfDeterminingRevenuesTxt>
      </SecuritiesPubliclyTradedGrp>
      <AnyPropertyThatMustBeHeldInd>0</AnyPropertyThatMustBeHeldInd>
      <ReviewProcessUnusualNCGiftsInd>0</ReviewProcessUnusualNCGiftsInd>
      <ThirdPartiesUsedInd>0</ThirdPartiesUsedInd>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="RetDoc1044400001">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION A, LINE 2</FormAndLineReferenceDesc>
        <ExplanationTxt>WILLIAM N. THORNDIKE JR. AND GENEVA S. THORNDIKE ARE MARRIED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION B, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>THE FEDERAL FORM 990 AND THE MASSACHUSETTS FORM PC ARE COMPLETED BY THE ACCOUNTING FIRM, AND COMPLETED RETURNS ARE OF THE RETURNS ARE DISTRIBUTED TO ALL VOTING MEMBERS OF THE BOARD OF DIRECTORS FOR THEIR REVIEW AND COMMENT IN ADVANCE OF THE RETURNS BEING FILED.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PART VI, SECTION C, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>DOCUMENTS REQUIRED BY LAW ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="RetDoc1043400001">
      <IdRelatedTaxExemptOrgGrp>
        <DisregardedEntityName>
          <BusinessNameLine1Txt>BOSTON FOUNDATION INC</BusinessNameLine1Txt>
        </DisregardedEntityName>
        <USAddress>
          <AddressLine1Txt>75 ARLINGTON STREET NO FL 3</AddressLine1Txt>
          <CityNm>BOSTON</CityNm>
          <StateAbbreviationCd>MA</StateAbbreviationCd>
          <ZIPCd>02116</ZIPCd>
        </USAddress>
        <EIN>042104021</EIN>
        <PrimaryActivitiesTxt>TO ASSIST IN BUILDING AND SUSTAINING A PROSPEROUS CITY AND REGION.</PrimaryActivitiesTxt>
        <LegalDomicileStateCd>MA</LegalDomicileStateCd>
        <ExemptCodeSectionTxt>501(C)(3)</ExemptCodeSectionTxt>
        <PublicCharityStatusTxt>LINE 8</PublicCharityStatusTxt>
        <ControlledOrganizationInd>0</ControlledOrganizationInd>
      </IdRelatedTaxExemptOrgGrp>
      <ReceiptOfIntAnntsRntsRyltsInd>0</ReceiptOfIntAnntsRntsRyltsInd>
      <GiftGrntOrCapContriToOthOrgInd>0</GiftGrntOrCapContriToOthOrgInd>
      <GiftGrntCapContriFromOthOrgInd>0</GiftGrntCapContriFromOthOrgInd>
      <LoansOrGuaranteesToOtherOrgInd>0</LoansOrGuaranteesToOtherOrgInd>
      <LoansOrGuaranteesFromOthOrgInd>0</LoansOrGuaranteesFromOthOrgInd>
      <DivRelatedOrganizationInd>0</DivRelatedOrganizationInd>
      <AssetSaleToOtherOrgInd>0</AssetSaleToOtherOrgInd>
      <AssetPurchaseFromOtherOrgInd>0</AssetPurchaseFromOtherOrgInd>
      <AssetExchangeInd>0</AssetExchangeInd>
      <RentalOfFacilitiesToOthOrgInd>0</RentalOfFacilitiesToOthOrgInd>
      <RentalOfFcltsFromOthOrgInd>0</RentalOfFcltsFromOthOrgInd>
      <PerformOfServicesForOthOrgInd>0</PerformOfServicesForOthOrgInd>
      <PerformOfServicesByOtherOrgInd>0</PerformOfServicesByOtherOrgInd>
      <SharingOfFacilitiesInd>0</SharingOfFacilitiesInd>
      <PaidEmployeesSharingInd>0</PaidEmployeesSharingInd>
      <ReimbursementPaidToOtherOrgInd>0</ReimbursementPaidToOtherOrgInd>
      <ReimbursementPaidByOtherOrgInd>0</ReimbursementPaidByOtherOrgInd>
      <TransferToOtherOrgInd>0</TransferToOtherOrgInd>
      <TransferFromOtherOrgInd>0</TransferFromOtherOrgInd>
    </IRS990ScheduleR>
  </ReturnData>
</Return>
