A.M.S. (Series) ; L751. "Edition 5-AMS (AFFE)". Transverse Mercator projection. "Prepared by the Army Map Service (PT), Corps of Engineers, U.S. Army, Washington, D.C. Compiled in 1947 from Korea, 1:50,000, Japanese Imperial Land Survey, I-ri, 1937. Coastal hydrography compiled from Japanese Hydrographic Charts 333, 1939; 334, 1935. Planimetric detail revised by photo-planimetric methods from aerial photography, 1947; road classifications revised May 1951 from reconnaissance material furnished by the Engineer, EUSAK; Sino-Korean characters added, 1951 by the 64th Engineer Base Topographic Battalion.... Horizontal and vertical control corrections added by 64th Engr (Base Topo) 1954."