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 Turko Persian Fronteir Maps 1853 & 1913-14, Russian 5 Verst Map Edition I.D. 1885, Major Maunsell Reconnaissances 1898-1900, Col. Bell 1886, Col. Gerard 1881 and Col. Picot 1894, Capt: B.Dickson 1909, Dr. W. Bachmann-Reise von Mosul nach Van 1911, Count v. Westarp-Aufnahmen in Armenien und Kurdistan 1912." With glossary. Set is complete, see index.