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 Chesney's Euphrates Expedition 1839, Col M.S. Bell 1886, Oppenheim's 'Vom Mittlemeer zum Persischen Golf' 1893, Kartevon Kleinasien - R. Kiepert - sheet Haleb 1911, Saare & Hersfeld Archaeologische Reise in Euphrate & Tigris Gebiet 1908, Capt. M. Sykes 1906, Dr. Hinriches 1911. Corrected to Nov. 1915." With glossary. Set is complete, see index.