One ill. tipped in.
'The material contained in this publication originally appeared under the Air Publications reference 2062A & C Volume I entitled "Lancaster I and III Aircraft, Mk I four Merlin XX Power Plants ; Mk III four Merlin 28 or 38 Power Plants"' ... [it] was produced for official use and internal purposes by the Air Ministry' - title page verso.
The Lancaster manual : the official air publication for the Lancaster Mk I and III, 1942-1945. ISBN 0853683115. Published by Arms and Armour Press in 1977. Publication and catalogue information, links to buy online and reader comments.