1Destutt de Tracy to Thomas Jefferson, 21 October 1811 (Jefferson Papers)
Logique (Destutt de Tracy) [index entry]
2Enclosure: Destutt de Tracy to Pierre Samuel Du Pont de Nemours, 30 January 1816 (Jefferson Papers)
Logique (Destutt de Tracy) [index entry]
3Destutt de Tracy to Thomas Jefferson, 4 February 1816 (Jefferson Papers)
Logique (Destutt de Tracy) [index entry]
4Thomas Jefferson to John Adams, 11 January 1817 (Jefferson Papers)
Logique (Destutt de Tracy) [index entry]
5Destutt de Tracy to Thomas Jefferson, 22 February 1821 (Jefferson Papers)
Logique (Destutt de Tracy) [index entry]