and the United States During World War II. Warrendale, Pennsylvania: SAE International, 1995. Wilkinson, Paul H. Aircraft Engines of the World 1946 (3rd ed.). London: Sir Isaac Pitman and Sons, 1946. "Some Trends in engine design (article and images)." Flight No. 1563, Volume XXXIV, 8 December 1938. "Rolls-Royce Merlin 130 Series (article and images)." Flight No. 1935, Volume XLIX, 24 January 1946. "Two New Power Units (article and images)." Flight and The Aircraft Engineer No. 1961, Volume L, 25 July 1946. Further reading Gunston, Bill. Development of Piston Aero Engines. Cambridge: Patrick Stephens, 2006. Henshaw, Alex. Sigh for a Merlin: Testing the Spitfire. London: Crecy, 1999 (2nd revised edition). . Jackson, Robert. The Encyclopedia of Military Aircraft Bath, UK: Parragon Books, 2006. . Price, Alfred. Spitfire Mark I/II Aces 1939–41. London: Osprey Aerospace, 1996. . Quill, Jeffrey. "Spitfire: A Test Pilot's Story". London: John Murray, 1983; Crecy Publishing 1996 (2nd edition) External links Merlin engines in Manchester – BBC Post-War Rolls-Royce film on manufacturing the Merlin – YouTube Merlin 60 series comparison drawings – Spitfireperformance.com Rolls-Royce Merlin 61 sectioned drawing "Vee-Twelve Par Excellence" a 1937 Flight article on the Merlin I and II "A British Masterpiece" a 1942 Flight article on the Merlin XX "Universal Power Plants" – 1947 Flight article on postwar Merlin installations for civilian aircraft Merlin engine photo gallery from BBC Radio Leicester Sectioned image of possible turbocharger installation – Flight International The Rolls-Royce Merlin – Aircraft Engines of The World Merlin 1930s aircraft piston engines V12 aircraft engines Articles containing video clips