1Destutt de Tracy to Thomas Jefferson, 11 April 1818 (Jefferson Papers)
A Treatise on Political Economy (Destutt de Tracy) [index entry]
2Destutt de Tracy to Thomas Jefferson, 10 March 1819 (Jefferson Papers)
A Treatise on Political Economy (Destutt de Tracy) [index entry]
3Destutt de Tracy to Thomas Jefferson, 24 November 1820 (Jefferson Papers)
A Treatise on Political Economy (Destutt de Tracy) [index entry]
4Destutt de Tracy to Thomas Jefferson, 22 February 1821 (Jefferson Papers)
A Treatise on Political Economy (Destutt de Tracy) [index entry]