A.M.S. (Series) ; L751. "AMS 4". Transverse Mercator projection. "Prepared by the Army Map Service (AM), Corps of Engineers, U.S. Army, Washington, D.C. Redrawn in 1950 from Korea 1:50,000, Japanese Imperial Land Survey, Waegwan, 1939.... Aerial photography Feb.-Apr.- and Oct. 1947.... Major roads classified by reconnaissance methods, 1947." On verso: sheet 6926 III, Chongson, from Korea 1:50,000 set.
