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        <ManagementAndGeneralAmt>1369</ManagementAndGeneralAmt>
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        <ManagementAndGeneralAmt>2117</ManagementAndGeneralAmt>
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      <FootnoteTextInd>X</FootnoteTextInd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>THE ORGANIZATION IS A TAX-EXEMPT ORGANIZATION UNDER SECTION 501 (C) (3) OF THE INTERNAL REVENUE CODE. ACCORDINGLY, NO PROVISION FOR FEDERAL OR STATE INCOME TAXES HAS BEEN RECORDED IN THE FINANCIAL STATEMENTS. GENERALLY ACCEPTED ACCOUNTING PRINCIPLES PRESCRIBES A RECOGNITION THRESHOLD AND MEASUREMENT ATTRIBUTE FOR THE FINANCIAL STATEMENT RECOGNITION AND MEASUREMENT OF A TAX POSITION TAKEN OR EXPECTED TO BE TAKEN IN A TAX RETURN. IT REQUIRES THAT COMPUTATIONS OF CURRENT AND DEFERRED INCOME TAXES ONLY CONSIDER TAX POSITIONS THAT ARE MORE THAN LIKELY THAN NOT TO BE SUSTAINED IF THE TAX AUTHORITIES EXAMINE A POSITION. THE ORGANIZATION EVALUATES STATUTES OF LIMITATIONS, CHANGES IN TAX LAW AND NEW AUTHORITATIVE RULINGS AND ACCRUES FOR LIABILITIES IF APPLICABLE. THE ORGANIZATION'S ANALYSIS FOUND NO UNCERTAIN TAX POSITIONS. FEDERAL AND STATE TAX RETURNS ARE SUBJECT TO EXAMINATION BY THE TAXING AUTHORITIES GENERALLY FOR A PERIOD OF THREE YEARS AFTER THEY ARE FILED. ANY PENALTIES AND INTEREST ASSESSED BY TAXING AUTHORITIES ARE INCLUDED IN OPERATING EXPENSES. NO INTEREST AND PENALTIES HAVE BEEN RECORDED FOR THE YEAR ENDED JUNE 30, 2017.</ExplanationTxt>
      </SupplementalInformationDetail>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 1, ITEM B</FormAndLineReferenceDesc>
        <ExplanationTxt>FRIENDS OF PRINCETON OPEN SPACE'S INTEREST IN THE DAVID MATHEY CHARITABLE REMAINDER TRUST INADVERTENTLY OMITTED ON THE ORIGINAL FORM 990.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>IN PRINCETON: ACQUIRING LAND FOR PRESERVATION, PROTECTING NATURAL RESOURCES, MAINTAINING AND EXTENDING TRAILS AND PROVIDING ENVIRONMENTAL EDUCATION. IN THE PRINCETON REGION: WORKING WITH OTHER GROUPS TO SUPPORT EFFORTS TO PRESERVE AND PROTECT OPEN SPACE AND THE ENVIRONMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 1, PART I, LINE 6</FormAndLineReferenceDesc>
        <ExplanationTxt>VOLUNTEERS SERVE ON THE BOARD AND ASSIST WITH ACTIVITIES THROUGHOUT THE YEAR.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>FORM 990 IS REVIEWED BY THE BOARD OF TRUSTEES PRIOR TO BEING FILED WITH THE IRS.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS ARE MADE AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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        </OtherOrganizationName>
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</Return>