Jefferson, Thomas (1904–1905). "TO JAMES MADISON 1, Aug. 28, 1789". In Paul Leicester Ford (ed.). The Works of Thomas Jefferson. Vol. 5 (Federal ed.). New York and London: G.P. Putnam's Sons. Retrieved August 11, 2012.
Paul Leicester Ford, ed. (1904–1905). The Works of Thomas Jefferson. Vol. 4, Notes On Virginia, QUERY XVIII, The particular customs and manners that may happen to be received in that State?. New York and London: G.P. Putnam's Sons. pp. 82–84. Archived from the original on May 16, 2010. Retrieved August 11, 2012.
Jefferson, Thomas (1904–1905). "AUTOBIOGRAPHY 1743–1790". In Paul Leicester Ford (ed.). The Works of Thomas Jefferson. Vol. 1 (Federal ed.). New York and London: G.P. Putnam's Sons. p. 77. Retrieved August 11, 2012.
Paul Leicester Ford, ed. (1904–1905). The Works of Thomas Jefferson. Vol. 4, Notes On Virginia, QUERY XVIII, The particular customs and manners that may happen to be received in that State?. New York and London: G.P. Putnam's Sons. pp. 82–84. Archived from the original on May 16, 2010. Retrieved August 11, 2012.