Benjamin Franklin (1818). “Memoirs of the life and writings of Benjamin Franklin, written by himself to a late period, and continued to his death by W.T. Franklin. Comprising the private correspondence and public negotiations of dr. Franklin and a selection from his works”, p.2
Benjamin Franklin, Jared Sparks (1856). “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.514
James C. Humes, Benjamin Franklin (1995). “The wit and wisdom of Benjamin Franklin: a treasury of more than 900 quotations and anecdotes”, Harpercollins