Defence of Britain : defences throughout the south of England and Wales including the "Overlord" operation as at "D" day (6 June 1944), also anti "Diver" defences throughout the period of attack (June 1944-March 1945).
[London] : Ministry of Defence,
1945.
"Top Secret" [open]
Base maps: GSGS 3957 sheets 3, 6, 7, 9, 10, 11, 12. Lettered A-G. Maps A and D are black and white photocopies.
"Original map (No 1500) ... in 5 colours on 1" GSGS 3907".
Section 8 of Memorandum issued by Ministry of Home Security, Key Points Intelligence Directorate ... May 1945 "HS/8/1.