11Thomas Jefferson to John Staples, 25 January 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
12Thomas Jefferson to Charles Willson Peale, 13 June 1815 (Jefferson Papers)
patents; of O. Evans [index entry]
13Thomas Jefferson to Isaac McPherson, 13 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
14Isaac McPherson to Thomas Jefferson, 3 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
15Thomas Cooper to Thomas Jefferson, 31 May 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
16John Moody to Thomas Jefferson, January 1812 (Jefferson Papers)
patents; of O. Evans [index entry]
17Thomas Jefferson to Thomas Cooper, 16 January 1814 (Jefferson Papers)
patents; of O. Evans [index entry]