1Thomas Jefferson to John Adams, 14 October 1816 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]
2Thomas Jefferson to John Adams, 25 November 1816 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]
3Thomas Jefferson to John Adams, 11 January 1817 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]