1Thomas Jefferson’s Account with Nicolas G. Dufief, [ca. 4 May 1815] (Jefferson Papers)
Barton, William; Memoirs of the Life of David Rittenhouse [index entry]
2John Adams to Thomas Jefferson, February–3 March 1814 (Jefferson Papers)
Barton, William; Memoirs of the Life of David Rittenhouse [index entry]
3William Barton to Thomas Jefferson, 6 June 1814 (Jefferson Papers)
Barton, William; Memoirs of the Life of David Rittenhouse [index entry]
4William Barton to Thomas Jefferson, 4 August 1814 (Jefferson Papers)
Barton, William; Memoirs of the Life of David Rittenhouse [index entry]
5Robert Patterson to Thomas Jefferson, 28 November 1815 (Jefferson Papers)
Barton, William; Memoirs of the Life of David Rittenhouse [index entry]