Benjamin Franklin, Edmund Sears Morgan (2007). “Not Your Usual Founding Father: Selected Readings from Benjamin Franklin”, p.142, Yale University Press
Benjamin Franklin, William-Temple Franklin (1818). “Memoirs of the Life and Writings of (the Same), Continued to the Time of His Death by William Temple Franklin. - London, H. Colburn 1818”, p.249
Benjamin Franklin, Ulysses S. Grant, Andrew Carnegie, Henry Adams (2016). “Great American Lives: The Autobiography of Benjamin Franklin, Personal Memoirs of Ulysses S. Grant, Autobiography of Andrew Carnegie, and The Education of Henry Adams”, p.110, Open Road Media
Benjamin Franklin (1824). “The Works of Benjamin Franklin Consisting of Essays, Humorous, Moral and Literary, with His Life, Written by Himself”, p.244
Benjamin Franklin, William-Temple Franklin (1818). “Memoirs of the Life and Writings of (the Same), Continued to the Time of His Death by William Temple Franklin. - London, H. Colburn 1818”, p.252