Thomas Jefferson (2010). “The Works of Thomas Jefferson: Correspondence 1771 - 1779, the Summary View, and the Declaration of Independence”, p.378, Cosimo, Inc.
Thomas Jefferson (2010). “The Works of Thomas Jefferson: Correspondence 1771 - 1779, the Summary View, and the Declaration of Independence”, p.215, Cosimo, Inc.
Thomas Jefferson, H. A. Washington (2011). “The Writings of Thomas Jefferson: Being His Autobiography, Correspondence, Reports, Messages, Addresses, and Other Writings, Official and Private”, p.323, Cambridge University Press
Thomas Jefferson (1829). “Memoirs Corespondence and Private Papers of Thomas Jefferson Late, President of the United States: Now First Published the Original Manuscripts”, p.191