1Thomas Jefferson to Isaac McPherson, 13 August 1813 (Jefferson Papers)
Essai sur l’Histoire Génerale des Mathématiques (C. Bossut) [index entry]
2Thomas Jefferson to John Minor, 30 August 1814, including Thomas Jefferson to Bernard Moore, [ca. 1773?] (Jefferson Papers)
Essai sur l’Histoire Génerale des Mathématiques (C. Bossut) [index entry]