United States. Army Map Service. Great Britain. War Office. General Staff. Geographical Section. G.S.G.S. no. 4275. In upper left margin: Algeria 1:5000. Relief shown by hachures. British North West Africa grid. Based on a French map dated 1895 and revised sheets (1:50,000) 73, 1932; 1974, 1925; and Intelligence reports, 1941. Photoliographed at War Office 1942.