1Thomas Jefferson to Joel Barlow, 31 December 1809 (Jefferson Papers)
dynamometers; TJ tries to obtain [index entry]
2Joel Barlow to Thomas Jefferson, 15 January 1810 (Jefferson Papers)
dynamometers; TJ tries to obtain [index entry]
3Thomas Jefferson to Dabney Carr, 17 January 1810 (Jefferson Papers)
dynamometers; TJ tries to obtain [index entry]
4Thomas Jefferson to Joel Barlow, 24 January 1810 (Jefferson Papers)
dynamometers; TJ tries to obtain [index entry]
5Robert Fulton to Thomas Jefferson, 28 March 1810 (Jefferson Papers)
dynamometers; TJ tries to obtain [index entry]
6Thomas Jefferson to Robert Fulton, 16 April 1810 (Jefferson Papers)
dynamometers; TJ tries to obtain [index entry]