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        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 10</FormAndLineReferenceDesc>
        <ExplanationTxt>Donations to honor Tom Brady $500, Studios without Walls $500, Brookline News $5,000, Emerald Necklace Conservancy $1,500, Muddy Water Initiative Water Level study $1,500, Town of Brookline-Fiser Hill Reservoir Park - bioswale plantings $2,965 Total $11,965</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 16</FormAndLineReferenceDesc>
        <ExplanationTxt>Disbursed to Friends Groups $10,787; Support for Parks &amp; open space $3,517; Walks $172; Fundraising (return envelopes) $1,642; Insurance $1,607; Other Bank Charges, Supplies, Software, Filing fees, donations $663; Friends group support $297; Annual Meeting $1,173; Conferences &amp; meetings $170; Special Event (reception) $1,741 Total $18,804</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part I, Line 20</FormAndLineReferenceDesc>
        <ExplanationTxt>To record adjustments for reserves held for ARPA and Conservation Restriction - $40,009</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Form 990-EZ, Part II, Line 26</FormAndLineReferenceDesc>
        <ExplanationTxt>Friends of: Emerson Park $56, Carlton Street Footbridge $201, Minot Rose Garden $7,521, Leverett Pond $1,008, Waldstein Park $1,520, Dane Park $5,750, Larz Anderson Park $3,597, Lawton Park Community Garden $500, Lost Pond $4,368, Beacon Bridleway $1,984, Putterham Woods $3,620, Total Current Liabilities $30,125</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
    <ReasonableCauseExplanation documentId="R000005" softwareId="25022730" softwareVersionNum="v1.00">
      <ExplanationTxt>Form 8868, Application for Extension of Time to File an Exempt Organization of Time to File, was submitted on May 5, 2026.</ExplanationTxt>
    </ReasonableCauseExplanation>
  </ReturnData>
</Return>