A.M.S. (Series) ; L751. "Fifth Edition-AMS (FEC)". Transverse Mercator projection. "Prepared under the direction of the Engineer, GHQ, FEC, by the 64th Engineer Base Topographic Battalion. Redrawn in 1950 from Korea 1:50,000, Japanese Imperial Land Survey, Changgye-ri, 1918.... Aerial photography, 1946-8.... Sino-Korean characters added 1951." Map's lower edge lacking, cropping some marginal content.