1. ‘Sketch map showing the approximate locations of the BAHREIN OIL Co’s. establishments and other important points.’ Date: 1939/1939 Language: English Geographic region: Bahrain islands
3. Ext 254/45 'Memorandum by Mr. L. Lockhart on "The History of the Bahrain Islands."' Date: 1945/1945 Language: English Geographic region: Bahrain islands
4. File 3104/1915 Pt 10 ‘Mesopotamia: Trade with; liquidation of enemy assets &c; claims against enemy assets’ Date: 1918/1922 Language: English Geographic region: Bahrain islands