1Benjamin Smith Barton to Thomas Jefferson, 19 February 1815 (Jefferson Papers)
Barton, Benjamin Smith; illness of [index entry]
2Thomas Jefferson to Benjamin Smith Barton, 7 March 1815 (Jefferson Papers)
Barton, Benjamin Smith; illness of [index entry]
3Benjamin Smith Barton to Thomas Jefferson, 13 [April] 1815 (Jefferson Papers)
Barton, Benjamin Smith; illness of [index entry]
4Thomas Jefferson to Antonio Dugnani, 14 February 1818 (Jefferson Papers)
Barton, Benjamin Smith; illness of [index entry]