Thomas Dunn English (1885). “The Boy's Book of Battle-lyrics: A Collection of Verses Illustrating Some Notable Events in the History of the United States of America, from the Colonial Period to the Outbreak of the Sectional War”
Douglas MacArthur's speech to the Texas Legislature in Austin (June 13, 1951) as quoted in "General MacArthur Speeches and Reports 1908-1964" edited by Edward T. Imparato (p. 175), June 14, 2000.