GSGS (Series) ; 4534. GSGS (Series) ; 4072. 3rd ed. "Published at the War Office 1940". "Compiled and drawn at War Office, 1940. Heliographed Ordnance Survey, 1940." "Computedby A.W.A.S. Drawn at G.S.G.S.(A.M.)". "Projection. Europe (Air) conical orthomorphic (central zone)". Part of the Gordon Griffith fonds.