This is a list of spies who engaged in direct espionage. It includes Americans spying against their own country and people spying on behalf of the United States.
^Fitzpatrick, John C. (January 1939). The Writings of George Washington from the Original Manuscript Sources 1745-1799 Volume 12 June 1, 1778-September 30, 1778. Best Books on. p. 182. ISBN162376422X.
^Franklin Ben; and Morris, Robert (1776-07-08). "The Committee of Secret Correspondence to [Silas Deane]". "Philadelphia, July 8th, 1776." "Reprinted from The North American and United States Gazette (Philadelphia), October 12, 1855." Retrieved from http://franklinpapers.org/franklin/framedVolumes.jsp?vol=22&page=665a.
^Confederate Veteran, Volume 24. S.A. Cunningham, 1916. p. 328.
^Swanson, James L., Manhunt: The 12-Day Chase for Lincoln's Killer. New York, HarperCollins, 2006, pp.167, 256.
Mashbir, Colonel Sidney (2019). I Was an American Spy - 65th Anniversary Edition. California: Horizon Productions. pp. This autobiography is like a course in military intelligence. ISBN978-0-9903349-9-6.