1C. & A. Conrad & Company to Thomas Jefferson, 4 August 1809 (Jefferson Papers)
American Artillerist’s Companion, or Elements of Artillery (Tousard) [index entry]
2C. & A. Conrad & Company to Thomas Jefferson, [received 15 April 1810] (Jefferson Papers)
American Artillerist’s Companion, or Elements of Artillery (Tousard) [index entry]