Astor, Gerald, Terrible Terry Allen: Combat General of World War II - The Life of an American Soldier, New York: Presidio Press, 1st ed., (ISBN0-89141-760-5), (ISBN978-0-89141-760-6) (2003)
Atkinson, Rick, The Day of Battle: The War in Sicily and Italy, 1943-1944, New York: Henry Holt & Co. (2007)
Bradley, Omar, A Soldier's Story, New York: Henry Holt (1951)
Johnson, Richard H. Jr., Investigation into the Reliefs of Generals Orlando Ward and Terry Allen, Fort Leavenworth, KS: US Army Command and General Staff College (2009)