A collection of aeroplane engine and propeller brochures; Rolls- Royce, The New 'F' Type Aero Engine with numerous photographs, a fold out diagram and 4 separate BHP graphs dated 1925(punched with holes for a ring binder, some marks to cover); Rolls-Royce Aero Engines, a leaflet in English and French covering the Kestrel and Buzzard engines; Curtis Controllable Pitch Propeller, a typescript discussion including a proposal for the licenced manufacture of the Curtis propeller in the USSR, the cover stamped 'Airspeed 1934', an envelope containing a Bristol Cherub III engine installation diagram; two Cirrus Hermes brochures (with some old tears to one); Wolseley Scorpio Mk1 Aero Engine with photographs and diagrams (punched with holes for a ring binder); Ratier - Les Hélices a pas Variable French text with photographs and diagrams; Wright Cyclone - Thirty years of Progress (punched with holes for a ring binder), with further Wright pamphlets; Pratt and Whitney Aeronautical Engines with typescript text, specifications, photographs and diagrams dated October 1934; and a folder containing Pratt and Whitney letters 1933 and Wright Whirlwind specifications (16)