11Isaac McPherson to Thomas Jefferson, 2 January 1814 (Jefferson Papers)
patents; of O. Evans [index entry]
12Thomas Jefferson to Isaac McPherson, 18 September 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
13Isaac McPherson to Thomas Jefferson, 28 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
14Enclosure: Extract of a Letter from Jonathan Ellicott to Thomas Worthington, [ca. Jan–February 1813?] (Jefferson Papers)
patents; of O. Evans [index entry]
15Thomas Jefferson to Isaac McPherson, 13 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
16Isaac McPherson to Thomas Jefferson, 3 August 1813 (Jefferson Papers)
patents; of O. Evans [index entry]
17John Moody to Thomas Jefferson, January 1812 (Jefferson Papers)
patents; of O. Evans [index entry]