1John Vaughan to Thomas Jefferson, 14 May 1818 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
2John Vaughan to Thomas Jefferson, 19 June 1819 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
3Enclosure: Report on Thomas Cooper’s Collection of Minerals, 9 July 1819 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]