George Washington, Jared Sparks (1834). “The Writings of George Washington: pt. I. Official letters relating to the French war, and private letters before the American revolution: March, 1754-May, 1775”, p.413
George Washington, Jared Sparks (1834). “The Writings of George Washington: Being His Correspondence, Addresses, Messages, and Other Papers, Official and Private, Selected and Published from the Original Manuscripts”, p.324