1. 'File 19/109 II (C 17) Bahrain: Relations of Chief with other Foreign Powers' Date: 1913/1922 Language: English Geographic region: ZubarahAl-Hasa
2. Sketch map of Bahrain and surrounding ports Date: 1919/1919 Language: English Geographic region: ZubarahAl-Hasa
3. Sketch map of Bahrain and surrounding ports Date: 1920/1920 Language: English Geographic region: ZubarahAl-Hasa
