A.M.S. (Series) ; L751. "Edition 7-AMS (AFFE)". Transverse Mercator projection. "Prepared under the direction of the Engineer, HQ, AFFE, by the 29th Engineer Battalion (Base Topographic). Compiled in 1954 by photogrammetric (multiplex) methods from aerial photography dated May, Oct. 1947. Planimetric detail revised by photo-planimetric methods from aerial photography Mar.-Apr. 1954. Horizontal and vertical control established by the Korean Government General's Office, 1912, 1915; partially recovered by the CE, U.S. Army, 1947."