GSGS (Series) ; 4504. GSGS (Series) ; 4072. 2nd ed. "Published by War Office 1940". "Compiled and drawn at War Office, 1940. Heliographed Ordnance Survey, 1940." "Calculated by A.W.A.S. Overprint drawn at G.S.G.S.(A.M.) June 1944". "Projection. Europe (Air) conical orthomorphic (central zone)". Part of the Gordon Griffith fonds.
