AMS 1 United States. Army Map Service. Provisional G.S.G.S. no. 4380 Great Britain. War Office. General Staff. Geographical Society. Provisional G.S.G.S. 4380 United States. Army Corps of Engineers Copied from I.S.I.S. report, 1:4,000, Savona CB1712 no. 30, 1940. Lambert conformal conic projection.