1Benjamin Rush to Thomas Jefferson, 2 January 1811 (Jefferson Papers)
Observations on man, his frame, his duty, and his expectations (D. Hartley) [index entry]
2Thomas Jefferson to Benjamin Rush, 16 January 1811 (Jefferson Papers)
Observations on man, his frame, his duty, and his expectations (D. Hartley) [index entry]
3Thomas Cooper to Thomas Jefferson, 31 May 1814 (Jefferson Papers)
Observations on man, his frame, his duty, and his expectations (D. Hartley) [index entry]