21Thomas Jefferson to Joseph Milligan, 26 June 1815 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]
22Thomas Jefferson to Joseph Milligan, 24 November 1814 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]
23Thomas Jefferson to Joseph Milligan, 17 October 1814 (Jefferson Papers)
Destutt de Tracy, Antoine Louis Claude; A Treatise on Political Economy [index entry]