1Thomas Jefferson to James Breckinridge, Chapman Johnson, and Robert Taylor, 8 July 1819 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
2Thomas Jefferson to Joseph C. Cabell, 27 June 1810 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
3Thomas Jefferson to Thomas Cooper, 4 October 1818 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
4Thomas Jefferson to Thomas Cooper, 10 October 1817 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
5Thomas Cooper to Thomas Jefferson, 28 July 1819 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
6Thomas Cooper to Thomas Jefferson, 6 December 1817 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
7Thomas Cooper to Thomas Jefferson, 30 September 1817 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
8Thomas Cooper to Thomas Jefferson, 7 December 1817 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
9John Vaughan to Thomas Jefferson, 19 June 1819 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]
10Thomas Cooper to Thomas Jefferson, 24 October 1817 (Jefferson Papers)
mineralogy; and T. Cooper [index entry]