"American Political Rhetoric: Essential Speeches and Writings on Founding Principles and Contemporary Controversies" by Peter Augustine Lawler, The Danger Threatening Representative Government (1897), August 16, 2010.
Robert M. La Follette, Sr.'s speech in Evansville, Indiana (July 7, 1906), as quoted in Michael Wolraich "Unreasonable Men: Theodore Roosevelt and the Republican Rebels Who Created Progressive Politics", July 22, 2014.