1Thomas Jefferson to John Adams, 14 October 1816 (Jefferson Papers)
2John Adams to Thomas Jefferson, 4 November 1816 (Jefferson Papers)
3Thomas Jefferson to John Adams, 25 November 1816 (Jefferson Papers)
4John Adams to Thomas Jefferson, 12 December 1816 (Jefferson Papers)
5Abigail Adams to Thomas Jefferson, 15 December 1816 (Jefferson Papers)
6John Adams to Thomas Jefferson, 16 December 1816 (Jefferson Papers)
7Destutt de Tracy to Thomas Jefferson, 24 December 1816 (Jefferson Papers)
8Thomas Jefferson to Destutt de Tracy, 15 May 1817 (Jefferson Papers)