1James H. McCulloh to Thomas Jefferson, 14 November 1817 (Jefferson Papers)
botany; scholars of [index entry]
2Robert B. Stark to Thomas Jefferson, 20 August 1818 (Jefferson Papers)
botany; scholars of [index entry]
3Constantine S. Rafinesque to Thomas Jefferson, 25 January 1821 (Jefferson Papers)
botany; scholars of [index entry]
4Robert Greenway to Thomas Jefferson, 20 March 1821 (Jefferson Papers)
botany; scholars of [index entry]
5Thomas Jefferson to Robert Greenway, 17 April 1821 (Jefferson Papers)
botany; scholars of [index entry]
6Arsenne Thiébaut de Berneaud to Thomas Jefferson, 17 December 1821 (Jefferson Papers)
botany; scholars of [index entry]