GSGS (Series) ; 2957. 1st ed.-AMS 2. "Compiled and drawn at W.O., heliographed at O.S. Isogonic data added by A.M.S., 1943". Originally published: War Office, 1936. On upper, right corner of map: Sheet 19 (1/M North K-O, 29-35). Conical orthomorphic projection with two standard parallels at 27⁰ and 63⁰ N. Lat.