George Washington, John Clement Fitzpatrick, David Maydole Matteson (1782). “The Writings of George Washington from the Original Manuscript Sources, 1745-1799”, p.486
"Conquest of the Country Northwest of the River Ohio, 1778 - 1783, and Life of Gen. George Rogers Clark" by William Hayden English, vol. 2, (p. 789), 1896.