ウィリアム・J・バーンズ
↑ Philip Dray, At the Hands of Persons Unknown: The Lynching of Black America, at 210 (Modern Library 2003).
↑ Bailey William G. ed., "The Encyclopedia of Police Science", second edition(1995) Pg. 49.
↑ Blum, Howard, "American Lightning: Terror, Mystery & The Birth of Hollywood", Three Rivers Press (2008), ISBN 978-0-307-34694-0
↑ Jeffreys-Jones, Rhodri, The FBI: A History, University Press of Kentucky (2007), ISBN 978-0-300-11914-5, p. 79