Benjamin Franklin, Jared Sparks (1840). “The Works of Benjamin Franklin: Containing Several Political and Historical Tracts Not Included in Any Former Edition, and Many Letters, Official and Private, Not Hitherto Published; with Notes and a Life of the Author”, p.515
David Rice (1812). “A Kentucky Protest Against Slavery: Slavery Inconsistent with Justice and Good Policy, Proved by a Speech, Delivered in the Convention, Held at Danville, Kentucky”, p.7