B. L. Rayner, Thomas Jefferson (1834). “Life of Thomas Jefferson: with selections from the most valuable portions of his voluminious and unrivalled private correspondence : with portrait”, p.423
Thomas Jefferson, Barbara B. Oberg (1950). “The Papers of Thomas Jefferson, Volume 29: 1 March 1796 to 31 December 1797”, p.424, Princeton University Press
Thomas Jefferson (1853). “The writings of Thomas Jefferson: being his autobiography, correspondence, reports, messages, addresses, and other writings, official and private”, p.187
Thomas Jefferson (1853). “The writings of Thomas Jefferson: being his autobiography, correspondence, reports, messages, addresses, and other writings, official and private : published by the order of the Joint Committee of Congress on the Library, from the original manuscripts, deposited in the Department of State”, p.319