1. ‘Südwestliches Arabien (Hidjaz und Jemen)’ Date: 1852/1852 Language: German Geographic region: JemenHidjaz Extent: 1 map
2. 'File 19/163 II (C 77) Nejd-Bahrain Relations' Contributor: James Orton (correspondent)Francis Warden (correspondent) Date: 1932/1939 Language: EnglishArabic Geographic region: Kingdom of HejazHidjazBahrainBūshehrAbū-ShahrHormuz Isle Extent: 1 volume (207 folios)
3. ‘HYDROGRAPHY – SELF PROPELLED BARGE CHANNELS. ZELLAQ, BAHREIN TO ARABIA. BR-513’ Contributor: James Orton (correspondent)Francis Warden (correspondent) Date: 1938/1938 Language: English Geographic region: Kingdom of HejazHidjazBahrainBūshehrAbū-ShahrHormuz Isle Extent: 1 map sheet
4. ‘BAHREIN & VICINITY. BR-486/1’ Contributor: James Orton (correspondent)Francis Warden (correspondent) Date: 1939/1939 Language: English Geographic region: Kingdom of HejazHidjazBahrainBūshehrAbū-ShahrHormuz Isle Extent: 1 map sheet