AD3014A. Lancaster I, II, III Oxygen System. Approx. 100 x 68cms. Prepared by The Ministry Of Aircraft Production for Promulgation by the Air Ministry. Printed for HM Stationary Office by G.C.M. Printing Services, Leicester. Dated July 1944. Marked as 'Restricted' & 'For Official Use Only'. Large colour poster printed on medium weight paper. Shows the fuselage of the Lancaster bomber in semi-cutaway form to illustrate the oxygen system and position of cylinders, regulators, crew plug points and economisers, portable oxygen cylinder containers etc. Also has an inset diagram showing a simplified plan of pipe connections. Folded and has some edge tears, small edge pieces missing and dog-eared edges/corners etc. (see photos). Fair '+' condition. Rare & impressive display piece. Stock code P16536.