found: Work cat.: Wixey, K.E. Armstrong Whitworth Whitley, 199-:p. 1 (the Armstrong Whitworth Whitley was one of the three "strategic" bomber types with which Britain went to war in Sept. 1939)
found: Wikipedia, 3 May 2006:Armstrong Whitworth Whitley (the Armstrong Whitworth A.W.38 Whitley was one of three twin-engine, front-line medium bombers in service with the Royal Air Force at the outbreak of World War II)
found: Virtual Aircraft Museum web site, 3 May 2006:UK, Armstrong Whitworth (Armstrong Whitworth A.W.38 Whitley, bomber)
found: Aviation of World War II web site, 3 May 2006:UK, Armstrong Whitworth (A.W.38 Whitley,long range bomber, Armstrong Whitworth; the Whitley)
found: British Aircraft Directory web site, 3 May 2006(Armstrong Whitworth Whitley; Armstrong Whitworth A.W.38 Whitley; twin-engined heavy bomber)