2. 'Persian Gulf Gazetteer, Part II: Geographical and descriptive materials, Section III: Central Arabia.' Date: 1904/1904 Language: English Geographic region: Arabian Peninsula
3. 'Persian Gulf Gazetteer, Part II: Geographical and descriptive materials, Section II: Western Side of the Gulf' Date: 1904/1904 Language: English Geographic region: Persian Gulf
4. 'Gazetteer of Persia, Vol IV' Creator: Author: General Staff Branch, India Date: 1910/1910 Language: English Geographic region: Persia
5. 'Handbook of Asir' Creator: Author: Cairo Intelligence Department, Arab Bureau Date: 1916/1916 Language: English Geographic region: Asir
6. 'Field Notes on Sa'udi Arabia, 1935' Creator: Author: Air Ministry Date: 1936/1936 Language: English Geographic region: Saudi Arabia
7. 'Southern Nejd: Journey to Kharj, Aflaj, Sulaiyyil, and Wadi Dawasir in 1918.' Creator: Author: Harry St John Bridger Philby Date: 1919/1919 Language: English Geographic region: NajdWadi DawasirRiyadh
