1Isaac McPherson to Thomas Jefferson, 28 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
2Isaac McPherson to Thomas Jefferson, 2 January 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
3John Wharton (1771–1845) to Thomas Jefferson, 8 July 1818 (Jefferson Papers)
patents; of O. Evans [index entry]
4Isaac McPherson to Thomas Jefferson, 3 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
5Oliver Evans to Thomas Jefferson, 7 January 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
6Thomas Cooper to Thomas Jefferson, 31 May 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
7Oliver Evans to Thomas Jefferson, 29 January 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
8John Moody to Thomas Jefferson, January 1812 (Jefferson Papers)
patents; of O. Evans [index entry]