Relief shown by contours and spot heights or form lines.. Some sheets were revised and issued by War Office. Geographical Section. General Staff, published as G.S.G.S. no. 1522, 1522a. Series covers Mesopotamia and eastern Anatolian parts of Ottoman Empire. Includes glossary. Series covers Mesopotamia and eastern Anatolian parts of Ottoman Empire. "Compied at the Intelligence Division, War Office by Major F.R. Maunsell, R.A. Major F.R. Maunsell's Reconnaissance & Triangulation 1892, 1899, 1900, Mr. Hampson's Map of Sassun 1894, Major Clayton 1889. Geographic coverage complete in 50 sheets.