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. "Compiled at the Intelligence Division, War Office by Major F.R. Maunsell R.A. from Turco-Persian Frontier Map 1913-14, Capt. Chermside R.E. 1882, Col. Gerard 1882 & Col. Bell 1886, Major Maunsell-Triangulation & Reconnaissance 1899-1900 & Reconnaissance 1888, Mr. Devey H.B.M. Vice Consul, Van 1890, Capt. M Sykes 1907, Cat. B. Dickson R.A. 1909, Dr. W. Bachmann-Reise von Mosul nach Van 1911, Turkish Staff Map. Revised to 1916." With glossary. Set is complete, see index.