"Jet planes Flight testing." . . "Jet planes Flight testing" . "X-3" . . "X- og Y-fly" . . "NACA" . . "Novela estadounidense." . . "Jetfly" . . "Jetalder" . . "Rocket planes." . . "Testpiloter" . . "Skystreak" . . "Air pilots , United States , Biography." . . . . "USA" . . "Skyrocket" . . . . . . . . . . . . . . . . "The lonely sky : ill. with photogr" . . . . . . . . "The lonely sky"@en . "The lonely sky" . . . . . . . . "The Lonely Sky. [By J.W. Bridgeman and Jacqueline Hazard, etc. Reminiscences of a test pilot. With plates, including portraits.]"@en . . . . . . . . . . . "Biography" . "Biography"@en . . . . . . . . . "The Lonely sky" . . . . . . . . "The lonely sky. [An account of William Bridgeman's experiences as a test pilot. With plates, including portraits.]"@en . . . . "XF-fly" . .