1. "Südwestliches Arabien (Hidjaz und Jemen)"‘Südwestliches Arabien (Hidjaz und Jemen)’ Date: 1852/1852 Language: German Geographic region: JemenHidjaz
2. 'File 19/163 II (C 77) Nejd-Bahrain Relations' Date: 1932/1939 Language: English Geographic region: Kingdom of HejazHidjaz
3. ‘HYDROGRAPHY – SELF PROPELLED BARGE CHANNELS. ZELLAQ, BAHREIN TO ARABIA. BR-513’ Date: 1938/1938 Language: English Geographic region: Kingdom of HejazHidjaz
4. ‘BAHREIN & VICINITY. BR-486/1’ Date: 1939/1939 Language: English Geographic region: Kingdom of HejazHidjaz