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      <SupplementalInformationDetail>
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      <SupplementalInformationDetail>
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        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>THE CASTINE HISTORICAL SOCIETY COLLECTS, PRESERVES AND EXHIBITS MATERIALS THAT ILLUMINATE THE RICH HISTORY OF THE CASTINE - BAGADUCE RIVER AREA AND, THROUGH IT, THAT OF NEW ENGLAND AND AMERICA, FROM PRE-COLONIAL TIMES TO THE PRESENT. IN DOING SO, THE SOCIETY SEEKS TO ENGAGE RESIDENTS AND VISITORS OF ALL AGES IN THE EXPLORATION AND STEWARDSHIP OF CASTINE'S DIVERSE HISTORICAL RESOURCES.</ExplanationTxt>
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        <ExplanationTxt>MEMBERSHIP IS OPEN TO PUBLIC</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 7A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE GOVERNING BODY IS ELECTED ANNUALY BY THE MEMBERS, ALL MEMBERS HAVE VOTING RIGHTS IN ELECTING NEW OFFICERS FROM AMOUNG THE MEMBERSHIP BODY.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>REVIEWED BY TREASURER</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 18</FormAndLineReferenceDesc>
        <ExplanationTxt>AVAILABLE ON GUIDESTAR OR UPON REQUEST THROUGH MAIL OR IN PERSON AT MUSEUM</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>COPIES KEPT ON SITE.INDIVIDUALS MAY REVIEW ON SITE OR BE PROVIDED WITH A PHOTOCOPY UPON REQUEST.</ExplanationTxt>
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</Return>