found: Work cat: Rivas, B. A very British sound barrier: the DH108, 2012.
found: Virtual Aircraft Museum website, Sept. 17, 2012:Aircraft Directory, United Kingdom (De Havilland D.H.108, 1946)
found: Wikipedia, Sept. 17, 2012(The de Havilland DH 108 "Swallow" was a British experimental aircraft designed in October 1945; the DH 108 featured a tailless, swept wing with a single vertical stabilizer; initially designed to evaluate swept wing handling characteristics at low and high subsonic speeds for the proposed early tailless design of the Comet airliner, three examples of the DH 108 were built; with the adoption of a conventional tail for the Comet, the aircraft were used instead to investigate swept wing handling up to supersonic speeds)
