1Thomas Jefferson to James H. McCulloch, 9 February 1819 (Jefferson Papers)
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2Thomas Jefferson to James H. McCulloch, 2 March 1819 (Jefferson Papers)
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3Thomas Jefferson to de Bure Frères, 27 May 1819 (Jefferson Papers)
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4Thomas Jefferson to David Bailie Warden, 26 December 1820 (Jefferson Papers)
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5Thomas Jefferson to John Vaughan, 6 January 1821 (Jefferson Papers)
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6Thomas Jefferson to James Madison, 16 September 1821 (Jefferson Papers)
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7Thomas Jefferson to Hutchins G. Burton, Thomas Cooper, and Samuel Brown, 28 September 1821 (Jefferson Papers)
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8Thomas Jefferson to George Ticknor, 28 September 1821 (Jefferson Papers)
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9Thomas Jefferson to John Clark, 12 October 1821 (Jefferson Papers)
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10Thomas Jefferson to James Madison, 30 October 1821 (Jefferson Papers)
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