1Thomas Jefferson to Horatio G. Spafford, 14 May 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
2Alexander von Humboldt to Thomas Jefferson, 12 June 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
3John W. Campbell to Thomas Jefferson, 29 July 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
4Thomas Jefferson to John W. Campbell, 3 September 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
5Isaac Riley to Thomas Jefferson, 29 September 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
6Thomas Jefferson to Isaac Riley, 7 October 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
7Thomas Jefferson to Joel Barlow, 8 October 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
8Isaac Riley to Thomas Jefferson, 16 October 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
9William Turpin to Thomas Jefferson, [received 5 November 1809] (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]
10Erastus Granger to Thomas Jefferson, 8 December 1809 (Jefferson Papers)
Jefferson, Thomas; Writings; Notes on the State of Virginia [index entry]