Prepared by the Army Map Service (AMNS), Corps of Engineers, U.S. Army, Washington, D.C. Compiled in 1951 from U.S.S.R., 1:42,000, General Staff of the Red Army, 1920-40; Russland (Kaukasus), 1:200,000, General Staff of the German Army, K38-XXII, 1941, K38-XXVII, K38-XXVVIII, 1942.