display at the following museums: American Airlines C.R. Smith Museum Fleet Air Arm Museum Delta Flight Museum National Air and Space Museum National Museum of the U.S. Air Force Specifications (GR-1820-G2) See also References Bibliography Bridgman, L, (ed.) (1998) Jane's Fighting Aircraft of World War II. Crescent. . Eden, Paul & Soph Moeng, The Complete Encyclopedia of World Aircraft. Amber Books Ltd. Bradley's Close, 74-77 White Lion Street, London, NI 9PF, 2002, . Gunston, Bill. World Encyclopedia of Aero Engines: From the Pioneers to the Present Day. 5th edition, Stroud, UK: Sutton, 2006. White, Graham. Allied Aircraft Piston Engines of World War II: History and Development of Frontline Aircraft Piston Engines Produced by Great Britain and the United States During World War II. Warrendale, Pennsylvania: SAE International, 1995. Aircraft air-cooled radial piston engines R-1820 1930s aircraft piston engines