Handbook on H.M. Airship, Rigid No. 9

The original of this handbook is amongst the rarest of all official Great War publications with its initial print runs being just 250 copies. Detailing the hull framework, gas bags, engines, instrumentation, controls, ballast, mooring and handling, armament, trial flights, modifications, stations and duties of crew, and specifications, etc, etc, with plates showing framework, walking ways, gondola, parachute, engine, etc, etc, etc. These three titles show in great details these lighter-than-air machines in the latter stages of the Great War.