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        <PersonNm>Timothy R Bailey</PersonNm>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART V - LINE 4</FormAndLineReferenceDesc>
        <ExplanationTxt>THE GILDER LEHRMAN INSTITUTE has two board-restricted endowments. The first is to fund its educational programs and the second is for purchase of historical documents and conservation of the Collection. THE TEMPORARILY RESTRICTED FUNDS ARE TO BE USED FOR AMERICAN HISTORY EDUCATION PROGRAMS THAT ARE TO OCCUR IN FUTURE FISCAL YEARS.</ExplanationTxt>
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        <ExplanationTxt>As of June 30, 2015, no amounts have been recognized for tax benefits resulting from uncertain income tax positions. The Institute's tax returns for the 2012 fiscal year and forward are subject to the usual review by the appropriate authorities.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XI - LINES 2D &amp; 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>2D. DIRECT SPECIAL EVENT EXPENSES: 203,972. 2D. COST OF GOODS SOLD: &lt;10,946&gt; 4B. FOREIGN TAXES PAID: 1,256.</ExplanationTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART XII - LINES 2D &amp; 4B</FormAndLineReferenceDesc>
        <ExplanationTxt>2D. DIRECT SPECIAL EVENT EXPENSES: 203,972. 2D. COST OF GOOD SOLD: 10,946 4B. FOREIGN TAXES PAID: 1,256.</ExplanationTxt>
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        <PersonNm>Timothy R Bailey</PersonNm>
        <TitleTxt>DIRECTOR OF EDUCATION</TitleTxt>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>part 1</FormAndLineReferenceDesc>
        <ExplanationTxt>The Institute has purchased and has received donations of documents of national historical significance. The documents are primarily maintained for public exhibition, education, and research in furtherance of public service, rather than for financial gain. In conformity with accounting policies generally followed by museums, the value of the historical documents has been excluded from the statement of financial position, and gifts of historical documents are excluded from revenue in the statement of activities. Purchases of historical documents are recorded as decreases in net assets in the statement of activities.</ExplanationTxt>
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    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III - LINE 1</FormAndLineReferenceDesc>
        <ExplanationTxt>Founded in 1994 by Richard Gilder and Lewis E. Lehrman, the Gilder Lehrman Institute of American History (THE "INSTITUTE") is a nonprofit organization devoted to the improvement of history education. The Institute has developed an array of programs for schools, teachers, and students that now operate in all fifty states, including a website that features more than 60,000 unique historical documents in the Gilder Lehrman Collection. Each year the Institute offers support and resources to tens of thousands of teachers, and through them enhances the education of more than a million students. The Institute's programs have been recognized by awards from the White House, the National Endowment for the Humanities, and the Organization of American Historians.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART III - LINE 4D</FormAndLineReferenceDesc>
        <ExplanationTxt>OTHER PROGRAMS: -National History Teacher of the Year Award program -History Scholar Awards -National Book Prizes -Conferences Outreach and Scholarly Fellowship Program</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION A. - QUESTION 2</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. JAMES G. BASKER (PRESIDENT AND TRUSTEE), IS A PAID CONSULTANT TO THE GILDER FOUNDATION, WHICH IS DIRECTED BY RICHARD GILDER (TREASURER &amp; executive v.p.), AND WHICH DONATEs ANNUALLY TO THE GILDER LEHRMAN INSTITUTE. RICHARD GILDER ENGAGED IN A BUSINESS TRANSACTION WITH LEWIS LEHRMAN. Richard Gilder and Shaiza Rizavi engaged in a business transaction. THE Gilder Lehrman Institute maintains an account at Gilder Gagnon Howe &amp; Co LLC (GGH). Richard Gilder and Shaiza Rizavi, trustees of GL, are members of GGH.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B. - QUESTION 11B</FormAndLineReferenceDesc>
        <ExplanationTxt>DR. JAMES G. BASKER (PRESIDENT &amp; trustee), AND CHRISTINE KANG (CHIEF OPERATIING OFFICER) REVIEWED THE FORM 990 BEFORE IT WAS FILED. A COPY WAS FURNISHED TO ALL MEMBERS OF THE BOARD OF TRUSTEES PRIOR TO FILING.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B. - QUESTION 12c</FormAndLineReferenceDesc>
        <ExplanationTxt>the CONFLICT OF INTEREST POLICy is supplied to all trustees and completed on an annual basis.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION B. - QUESTIONS 15A</FormAndLineReferenceDesc>
        <ExplanationTxt>EXECUTIVE DIRECTOR COMPENSATION IS REVIEWED USING COMPARABILITY DATA BY AT LEAST ONE MEMBER OF THE BOARD OF TRUSTEES. In addition, when hiring COO Christine Kang, THE Institute used a recruiting firm, who provided competitive salary research to like-organizations prior to determination of COO's salary. PART VI, SECTION B. - QUESTIONS 15B THE EXECUTIVE DIRECTOR AND CHIEF OPERATING OFFICER'S COMPENSATION IS REVIEWD USING COMPARABILITY DATA BY AT LEAST ONE MEMBER OF THE BOARD OF TRUSTEES.</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>PART VI, SECTION C. - QUESTION 19</FormAndLineReferenceDesc>
        <ExplanationTxt>THE INSTITUTE'S AUDITED FINANCIAL STATEMENTS ARE AVAILABLE ON ITS WEBSITE. THE GOVERNING DOCUMENTS AND CONFLICT OF INTEREST POLICY WILL BE made AVAILABLE TO THE PUBLIC UPON REQUEST.</ExplanationTxt>
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