1James W. Wallace to Thomas Jefferson, [received 16 March 1809] (Jefferson Papers)
medicine; plants used as [index entry]
2Cunningham Harris to Thomas Jefferson, 27 March 1809 (Jefferson Papers)
medicine; plants used as [index entry]
3André Thoüin to Thomas Jefferson, 2 March 1811 (Jefferson Papers)
medicine; plants used as [index entry]
4John Rhea to Thomas Jefferson, 20 November 1815 (Jefferson Papers)
medicine; plants used as [index entry]