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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>SCHEDULE D, PAGE 3, PART X</FormAndLineReferenceDesc>
        <ExplanationTxt>ACCOUNTING PRINCIPLES GENERALLY ACCEPTED IN THE UNITED STATES OF AMERICA REQUIRES MANAGEMENT TO EVALUATE TAX POSITIONS TAKEN BY THE ORGANIZATION AND RECOGNIZE A TAX LIABILITY IF THE ORGANIZATION HAS TAKEN AN UNCERTAIN TAX POSITION THAT MORE LIKELY THAN NOT WOULD NOT BE SUSTAINED UPON EXAMINATION BY THE INTERNAL REVENUE SERVICE AND STATE TAXING AUTHORITIES. THE ORGANIZATION IS SUBJECT TO ROUTINE AUDITS BY TAXING JURISDICTIONS; HOWEVER, THERE ARE CURRENTLY NO AUDITS FOR ANY TAX PERIODS IN PROGRESS.</ExplanationTxt>
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    <IRS990ScheduleO documentId="RetDoc4">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990 - ORGANIZATION'S MISSION</FormAndLineReferenceDesc>
        <ExplanationTxt>GREATER PORTLAND LANDMARKS USES PORTLAND'S HERITAGE - ITS BUILDINGS, PLACES, CULTURE, AND STORIES - AS A CATALYST FOR CONNECTION, AFFORDABILITY, AND RESILIENCE. WE ENGAGE THE COMMUNITY TO LEARN FROM ITS HISTORY, PRESERVE SPECIAL PLACES, AND ENCOURAGE DEVELOPMENT THAT SERVES AND INSPIRES THOSE WHO LIVE, WORK, AND VISIT PORTLAND TODAY AND IN THE FUTURE.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 2, PART III, LINE 4A</FormAndLineReferenceDesc>
        <ExplanationTxt>ADVOCACY AND EDUCATION - GREATER PORTLAND LANDMARKS SEEKS TO BUILD AWARENESS, INSTILL COMMUNITY PRIDE, AND FOSTER PUBLIC PARTICIPATION IN HISTORIC PRESERVATION. THROUGH COMMUNITY AND CIVIC ENGAGEMENT, EDUCATIONAL PROGRAMS, AND COMMUNICATIONS WE ADVOCATE FOR POLICIES AND PLANS THAT PRESERVE SIGNIFICANT HISTORIC CHARACTER, ENCOURAGE HIGH-QUALITY DESIGN, REUSE AND REIMAGINE HISTORIC PLACES SUSTAINABLY, AND ENHANCE A LIVABLE CITY. WE CONDUCT RESEARCH AND SURVEYS AND EDUCATE OUR COMMUNITY ABOUT THE HISTORY, CULTURE, AND ARCHITECTURE OF OUR BUILDINGS AND NEIGHBORHOODS BY TELLING COMPLETE AND DIVERSE STORIES. LANDMARKS' EDUCATION PROGRAMS ENGAGE ADULTS AND CHILDREN WITH ARCHITECTURE, PRESERVATION, AND HISTORY THROUGH TOURS, INTERACTIVE MAPS, ILLUSTRATED PRESENTATIONS, PUBLICATIONS, SPECIAL PROGRAMS, AND INTERPRETATION OF THE PORTLAND OBSERVATORY (1807).</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>GREATER PORTLAND LANDMARKS FINANCE COMMITTEE OF THE BOARD OF TRUSTEES WILL REVIEW THE DRAFT FORM 990, AND WORK WITH THE STAFF OF THEIR INDEPENDENT ACCOUNTANT TO RESOLVE ANY QUESTIONS. ONCE ANY QUESTIONS ARE RESOLVED, THE FINANCE COMMITTEE WILL APPROVE THE FORM 990, WHICH PRIOR TO FILING, WILL BE CIRCULATED ELECTRONICALLY TO THE ENTIRE BOARD OF TRUSTEES FOR THEIR INFORMATION AND COMMENT.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 12C</FormAndLineReferenceDesc>
        <ExplanationTxt>EACH YEAR EACH BOARD MEMBER SIGNS THE CONFLICT OF INTEREST POLICY AND DECLARES ANY CONFLICTS. ON AN ISSUE BY ISSUE BASIS, THE ORGANIZATION ASKS THE BOARD MEMBERS IF THERE ARE ANY CONFLICTS OF INTEREST PRIOR TO VOTING. BOARD MEMBERS ARE EXPECTED TO EXCUSE THEMSELVES FROM VOTING WHEN A CONFLICT IS DEEMED TO EXIST.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>THE EXECUTIVE DIRECTOR'S COMPENSATION PACKAGE IS BASED ON AN ANNUAL REVIEW BY THE EXECUTIVE COMMITTEE WHICH IS THEN RECOMMENDED TO THE FULL BOARD AS PART OF THE BUDGET PROCESS.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>FORM 990, PAGE 6, PART VI, LINE 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THESE DOCUMENTS ARE AVAILABLE UPON REQUEST AT THE ADMINISTRATIVE OFFICES OF GREATER PORTLAND LANDMARKS.</ExplanationTxt>
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</Return>