Thomas Paine, Alexander Hamilton, James Madison, John Jay (2017). “The Origin of the Nation: Declaration of Independence, Constitution, Bill of Rights and Other Amendments, Federalist Papers & Common Sense: Creating America - Landmark Documents that Shaped a New Nation”, p.508, Madison & Adams Press
Mark Twain (2012). “Three by Twain: Tom Sawyer, The Adventures of Huckleberry Finn, and A Connecticut Yankee In King Arther's Court”, p.63, Graphic Arts Books
Second lecture on discoveries and inventions, delivered to the Phi Alpha Society of Illinois College at Jacksonville, Illinois, (February 11, 1859); "The Collected Works of Abraham Lincoln, Vol. 3" edited by Roy P. Basler, (p. 357), 1953.