1John Vaughan to Thomas Jefferson, 19 August 1809 (Jefferson Papers)
American Philosophical Society; members of [index entry] American Philosophical Society; members of
2John Vaughan to Thomas Jefferson, 19 March 1815 (Jefferson Papers)
American Philosophical Society; members of [index entry] American Philosophical Society; members of
3Enclosure: Report on Thomas Cooper’s Collection of Minerals, 9 July 1819 (Jefferson Papers)
American Philosophical Society; members of [index entry]
4Letter of Recommendation for Richard Ware from James C. Fisher, Edward Burd, John Vaughan, and John Read, 17 March 1819 (Jefferson Papers)
American Philosophical Society; members of [index entry]