1Thomas Jefferson to David Hosack, 13 July 1816 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
2David Hosack to Thomas Jefferson, 1 August 1816 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
3Thomas Jefferson to David Hosack, 18 February 1818 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
4Thomas Jefferson to Bernard Peyton, 18 February 1818 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
5Eyriès Frères & Compagnie to Thomas Jefferson, 2 April 1821 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
6Thomas Jefferson to Jonathan Thompson, 25 June 1821 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
7Jonathan Thompson to Thomas Jefferson, 11 July 1821 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]
8Thomas Jefferson to David Hosack, 12 July 1821 (Jefferson Papers)
Hosack, David; and Elgin Botanic Garden [index entry]