AD3037A. Wellington III, X, XI, XII, XIII & XIV Oil System. Approximately 76 x 50cm. Prepared by The Ministry Of Aircraft Production for Promulgation by the Air Ministry. Printed for HM Stationary Office by H Manly & Sons Ltd. London. Dated August 1944. Marked as 'Restricted' & 'For Official Use Only'. Large colour poster printed on medium weight paper. Shows a cutaway drawing of an engine illustrating the oil system of the welllington bomber. Folded and has small edge tears and dog-eared edges/corners etc. Also has a small hole on one of the folds and general creasing (see photographs). Fair '+'/quite good condition. A good display piece. Stock code P22771.