1Thomas Jefferson to David Howell, 15 December 1810 (Jefferson Papers)
Jefferson, Thomas; Opinions on; exercise [index entry]
2Thomas Jefferson to Benjamin Rush, 16 January 1811 (Jefferson Papers)
Jefferson, Thomas; Opinions on; exercise [index entry]
3Thomas Jefferson to Lafayette, 20 January 1811 (Jefferson Papers)
Jefferson, Thomas; Opinions on; exercise [index entry]