Instructional Course Handbook for the Lancaster Aircraft, AVRO Type '683' Mk. 1., II, III & X. Published by A.V. Roe & Co. Ltd, Manchester, June 1944. Card cover, 15 x 22 cms. Approx. 64p plus around 20 pullout diagrams/charts at the back (equipment arrangement, rigging instructions, controls, hydraulics, fuel system, oil systems, turret hydraulics, electrical & oxygen systems, jacking points etc.) Intended to provide a short instructional course for squadron personnel on the operation and maintenance of Lancaster aircraft and covers such things as the fuselage, hydraulics, engine controls, gun turret hydraulics, electrical systems, wireless equipment, vacuum system, cabin heating, bomb gear, engine instruments, handling on the ground etc. Marked 'Confidential' and for use of recipient only under the official secrets act. Each copy of this book has an individual reference/issue number (4073). A little dog-eared around the edges of the cover but otherwise in good used condition. Named to a Corporal Victor Tibbles of 7 Sqdrn, Oakington, Cambridgeshire c.July 1944. Stock code P17709.