6th September 2017
A collection of twelve desk diaries, compiled by Robert H. Mayo for the years 1920, 1923, 1924, 1925, 1926, 1929, 1930, 1931, 1932, 1933, 1934 and 1935, together with six pocket notebooks, some part-used, and a reprint of Geoffrey de Havilland's logbook of test flying and design notes, Farnborough March 1911 to August 1912, Crown copyright 1971. Provenance: from the estate of the late Major Robert Hobart Mayo, O.B.E., M.A. (Cantab), Assoc.M.Inst.C.E., F.R.Ae.S., M.Inst.T.
Hammer price: £45
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