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. "Compied at the Intelligence Division, War Office by Major F.R. Maunsell, R.A. from Col. Chermside 1882, Capt. Clayton 1880, Capt G.S. Elliot, Reconnaissance 1897, Major F.R. Maunsell Triangulation & Reconnaissance 1898, 1900 & Reconnaissance 1892, Messrs. Lynch & Oswald 1897, Mr. Devey H.B.M. Vice Consul, Van 1892." With glossary. Set is complete, see index.