Notes for the Lancaster Aircraft, AVRO Type '683' MK.I & III. Published by A.V.Roe & Co. Ltd., Manchester, June 1943. Card covers, 15 x 23cm. Approximately 35p plus around 13 pullout diagram/charts at the back. The book covers fuel and oil systems; aeroplane controls; engine controls; handling; operating data; emergency procedures etc. The diagrams including those for the instrument panel, hydraulics, fuel system, turret hydraulics etc. Each copy was marked as 'Confidential', covered by the official secrets act and had an individual reference number, 2474 in this case. The cover is creased and a bit dog-eared. The pages and diagrams are also a bit creased with minor edge tears in places but overall condition is quite good. Stock code P20239.