A.M.S. (Series) ; L751. "AMS1". "Prepared under the direction of the Chief of Engineers by the Army Map Service (CV), U.S. Army, Washington, D.C. Copied in 1945 from Korea 1:50,000, Japanese Imperial Land Survey, Tangjin, 1919." "Culture photo revision by the 64th Engineer Base Topographic Battalion, July, 1950." Map's upper, lower and right edges are lacking, cropping some marginal and map content (i.e. title information). On verso: sheet 6625 I, Ich'ŏn, from Korea 1:50,000 set.