Wallace D. Wattles (2015). “The Science of Being Great: Personal Self-Help Book of Wallace D. Wattles (Unabridged): From one of The New Thought pioneers, author of The Science of Getting Rich, The Science of Being Well, How to Get What You Want, Hellfire Harrison, How to Promote Yourself and A New Christ”, p.45, e-artnow
Ulysses S. Grant, Harriet Beecher Stowe, Stephen Crane, Jefferson Davis, Abraham Lincoln (2012). “The Modern Library Civil War Bookshelf 5-Book Bundle: Personal Memoirs, Uncle Tom's Cabin, The Red Badge of Courage, Jefferson Davis: The Essential Writings, The Life and Writings of Abraham Lincoln”, p.2829, Modern Library
Joseph Story (1833). “Commentaries on the Constitution of the United States: With a Preliminary Review of the Constitutional History of the Colonies and States, Before the Adoption of the Constitution”, p.272