London: Ducimus Books, 1970. Marshall, Chester. Warbird History: B-29 Superfortress. Osceola, Wisconsin: Motorbooks International, 1993. . Maurer, Maurer. Air Force Combat Units of World War II. Maxwell Air Force Base, Alabama: Office of Air Force History, 1983. . Rhodes, Richard. The Making of the Atomic Bomb. Simon and Schuster, 1986. . Rust, Kenn C. Twentieth Air Force Story...in World War II. Temple City, California: Historical Aviation Album, 1979. . External links Twentieth Air Force Factsheet AIR FORCE MAGAZINE , Journal of the Air Force Assoc., August 2008. US ARMY History: Control of Army Air Operations Overseas in Washington Command Post:The Operations Division. United States Army Center of Military History. CMH Pub 1-2. US ARMY History: QUADRANT Conference HistoryNET: Operation Matterhorn USAAF: Operation Matterhorn 20 20 Military units and formations established in 1944 1944 establishments in Washington, D.C. Military units and formations in Wyoming Units and formations of Strategic Air Command United States Air Force units and formations in the Korean War World War II strategic bombing units Japan campaign Atomic bombings of Hiroshima and Nagasaki Nuclear warfare Nuclear weapons of the United States World War II aerial operations and battles of the Pacific theatre