1James Wilkinson to Thomas Jefferson, 21 January 1811 (Jefferson Papers)
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2James Madison to Thomas Jefferson, 15 February 1817 (Jefferson Papers)
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3John Adams to Thomas Jefferson, 23 November 1819 (Jefferson Papers)
Congress, U.S.; activities of [index entry]
4Ferdinand R. Hassler to Thomas Jefferson, 10 December 1819 (Jefferson Papers)
Congress, U.S.; activities of [index entry]
5Tench Coxe to Thomas Jefferson, 11 November 1820 (Jefferson Papers)
Congress, U.S.; activities of [index entry]