1Thomas Cooper to Thomas Jefferson, 14 September 1810 (Jefferson Papers)
Cabell, Joseph Carrington; and mineralogy [index entry]
2Thomas Jefferson to Thomas Cooper, 6 August 1810 (Jefferson Papers)
Cabell, Joseph Carrington; and mineralogy [index entry]
3Joseph C. Cabell to Thomas Jefferson, 23 July 1810 (Jefferson Papers)
Cabell, Joseph Carrington; and mineralogy [index entry]
4Thomas Jefferson to Joseph C. Cabell, 27 June 1810 (Jefferson Papers)
Cabell, Joseph Carrington; and mineralogy [index entry]