The next year, Broomfield made the same claim to the Royal Aircraft Establishment, and caused a new plaque with the date of 16 May 1908 to be made for the Cody Tree. The story first appeared in print in 1951, and again in 1952, in articles published by independent researchers. A fuller account of the fictitious day's flying appeared in Broomfield's biography of Cody, Pioneer of the Air, 1953. It was endorsed by Geoffrey de Havilland who provided the foreword and C. G. Grey, editor of the journal Aeroplane, who wrote the Introduction. The hoax was not exposed until 1958, the 50th anniversary of flight in Britain, when three investigators, G. W. B. Lacey from the Science Museum, A. T. E. Bray from the R.A.E. and the independent historian Charles Gibbs-Smith, asked Broomfield for clarifications.Walker, Vol. II (1974), Chap. 6.
