AMS 1 [Great Britain. War Office. General Staff. Geographical Section. Provisional G.S.G.S. no. 4380] United States. Army Map Service. Provisional G.S.G.S. no. 4380 United States. Army. Corps of Engineers Alternate title: Belvedere city plan. "Copied from Italy 1:50,000 map 228-I. Projection approximate.