Mark Twain, John Sutton Tuckey (1980). “The Devil's Race-track: Mark Twain's Great Dark Writings : the Best from Which was the Dream? and Fables of Man”, p.174, Univ of California Press
Speech to the Jersey City Chamber of Commerce (12 January 1938), as quoted in "The Last Three Miles : Politics, Murder, and the Construction of America's First Superhighway" by Steven Hart, (p. 137), 2007.
"The Death of Lovejoy" by William C. Bryant (November 18, 1837), as quoted in William Cullen Bryant II "Power For Sanity: Selected Editorials of William Cullen Bryant, 1829-61" (p. 78), 1994.
Francis Bacon, David Mallet (1740). “The Works of Francis Bacon, Baron of Verulam, Viscount St. Alban, Lord High Chancellor of England ...: With Several Additional Pieces, Never Before Printed in Any Edition of His Works. To which is Prefixed, a New Life of the Author”, p.349