1David Bailie Warden to Thomas Jefferson, [ca. 12–22 August 1817] (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]
2David Bailie Warden to Thomas Jefferson, 20 October 1814 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]