Kelly Miller (1919). “Kelly Miller's History of the World War for Human Rights ...: Why America Entered the Conflict ...& a Thrilling Account of the Important Part Taken by the Negro in the Tragic Defeat of Germany ...”
John George Nicolay (2008). “A Short Life of Abraham Lincoln: Condensed from Nicolay & Hay's Abraham Lincoln: a History: Easyread Large Edition”, p.75, ReadHowYouWant.com