[Papers of R.H. Mayo, O.B.E., F.R.Ae.S. 1913-1956. Reports, logbooks, newspaper and magazine articles, photographs and ephemera relating to the work of R.H. Mayo in the field of aviation. The papers concentrate particularly on Mayo's design of the Mayo composite aircraft and his connection with Imperial Airways and the Empire Air Mail Scheme. 7 boxes + 2 vols. + 3 films. Listing available]