Great Britain. War Office. General Staff. Geographical Section. G.S.G.S. 4381. United States. Army Map Service. In upper left margin: Corsica 1:5,000. Relief shown by form lines at 20 metres interval . Southern Italy grid. Convergence grid north is 2-degree 54' W. of True North on this sheet. Source: G.S.G.S. no. 4381, War Office, 1942. 1:5,000. Admiralty chart no. 1126. 1:12,500. "Air photographs have been used in the production of this plan.".
