1Thomas Cooper to Thomas Jefferson, 10 May 1810 (Jefferson Papers)
Cooper, Thomas; and mineralogy [index entry]
2Joseph C. Cabell to Thomas Jefferson, 23 July 1810 (Jefferson Papers)
Cooper, Thomas; and mineralogy [index entry]
3Thomas Cooper to Thomas Jefferson, 14 September 1810 (Jefferson Papers)
Cooper, Thomas; and mineralogy [index entry]