1Barthélemy Faujas de Saint-Fond to Thomas Jefferson, [ca. November 1809] (Jefferson Papers)
Troost, Gerard; introduced to TJ [index entry]
2André Thoüin to Thomas Jefferson, 20 March 1810 (Jefferson Papers)
Troost, Gerard; introduced to TJ [index entry]
3Silvain Godon to Thomas Jefferson, 18 June 1810 (Jefferson Papers)
Troost, Gerard; introduced to TJ [index entry]