1Thomas Jefferson to Thomas Cooper, 6 August 1810 (Jefferson Papers)
chemistry; study of [index entry]
2Thomas Jefferson to Peter Carr, 7 September 1814 (Jefferson Papers)
chemistry; study of [index entry]
3Thomas Jefferson to Peter H. Wendover (Draft), 13 March 1815 (Jefferson Papers)
chemistry; study of [index entry]
4Thomas Jefferson to Francis W. Gilmer, 14 October 1817 (Jefferson Papers)
chemistry; study of [index entry]
5Thomas Jefferson to Benjamin Waterhouse, 3 March 1818 (Jefferson Papers)
chemistry; study of [index entry]