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 Admiralty Chart no. 2236, Major F.R. Maunsell's Reconnaissance 1892, 1897, 1898 & large scale map of Trebizond & environs. Lieut: J.J. Leverson 1880 & Major W.Everett 1886. Special Karte Turkischen Armeniens-Kiepert 1877 Mr. Krausse & Mr. Hekimian's sketches. Karet von Hoch Armenien-Strekker Russian 20 Verst map - sheet A-4. Corrected, January 1919." With glossary. Set is complete, see index.