Woodrow Wilson (1916). “Wit and Wisdom of Woodrow Wilson: Extracts from the Public Speeches of the Leader and Interpreter of American Democracy, with Masterpieces of Eloquence”, Best Books
Max Beckmann, Barbara Copeland Buenger (1997). “Self-Portrait in Words: Collected Writings and Statements, 1903-1950”, p.305, University of Chicago Press
George Washington, Jared Sparks (1836). “The Writings of George Washington: Being His Correspondence, Addresses, Messages, and Other Papers, Official and Private, Selected and Published from the Original Manuscripts; with a Life of the Author, Notes and Illustrations”, p.40