Great Britain. War Office. Intelligence Division. I.D.W.O. no. 1522. Great Britain. War Office. General Staff. Geographical Section. G.S.G.S. no. 1522. Relief shown by form lines and spot heights. Some sheets from this set 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. "North-East portion by Lt. Col. F.R. Maunsell C.M.G., Tigris River and Shatt-el-Adhaim as far as Band-i-Adhaim from Surveys by the British Army." With glossary. Set complete, see index.