1Thomas Jefferson to John Minor, 30 August 1814, including Thomas Jefferson to Bernard Moore, [ca. 1773?] (Jefferson Papers)
Tusculan Disputations (Cicero) [index entry]
2Thomas Jefferson to Amos J. Cook, 21 January 1816 (Jefferson Papers)
Tusculan Disputations (Cicero) [index entry]
3Thomas Jefferson to Wells & Lilly, 1 April 1818 (Jefferson Papers)
Tusculan Disputations (Cicero) [index entry]