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 Russian 5 Verst Survey-Sheet F.-10, Lieut. Col. H.P. Picot Reconnaissance 1894, Col. M.G. Gerard Reconnaissance 1881." With glossary. Set is complete, see index.