1William Thornton to Thomas Jefferson, 20 January 1812 (Jefferson Papers)
Washington (D.C.); proposed botanical garden in [index entry]
2John Bradbury to Thomas Jefferson, 5 March 1812 (Jefferson Papers)
Washington (D.C.); proposed botanical garden in [index entry]
3William Thornton to Thomas Jefferson, 19 February 1817 (Jefferson Papers)
Washington, D.C.; proposed botanical garden in [index entry]
4Thomas Law to Thomas Jefferson, [received 23 February 1817] (Jefferson Papers)
Washington, D.C.; proposed botanical garden in [index entry]