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Ambrose Bierce (2013). “The Best Of Ambrose Bierce: The Damned Thing + An Occurrence at Owl Creek Bridge + The Devil's Dictionary + Chickamauga (4 Classics in 1 Book)”, p.75, e-artnow
United States. President (1837-1841 : Van Buren), Martin Van Buren (1838). “Message from the President of the United States to the Two Houses of Congress: At the Commencement of the Third Session of the Twenty-fifth Congress”, p.10
Thomas Bulfinch (1858). “The Age of Chivalry: Or Legends of King Arthur, "King Arthur and His Knights", "The Mabinogeon", "The Crusades", "Robin Hood", Etc”, p.19