31Thomas Jefferson to David Bailie Warden, 26 December 1820 (Jefferson Papers)
32George Alexander Otis to Thomas Jefferson, 4 January 1821 (Jefferson Papers)
33David Bailie Warden to Thomas Jefferson, 25 March 1821 (Jefferson Papers)
34Thomas Jefferson’s Notes on Early Career (the so-called “Autobiography”), [6 January–29 July 1821], with editorial note … (Jefferson Papers)