13. Ext 3508/42 'Report by Mr Bowlby, Petroleum Department representative, on his visit to Abadan, Bahrain, Saudi Arabia and Basra' Creator: Author: Petroleum Division Date: 1942/1942 Language: English Geographic region: Saudi Arabia
15. Coll 30/129 'Persian Gulf. Question of the ownership of the islands of Farsi, Arabi and Harqus, and Dalmah' Date: 1936/1947 Language: English Geographic region: Farsi IslandHarqus IslandArabi Island
16. Coll 30/195 ‘Persian Gulf Defence QATAR.’ Date: 1938/1943 Language: English Geographic region: Qatar
17. File 2794/1921 Pt 5-5A 'OIL QATAR AND MUSCAT' Date: 1923/1933 Language: English Geographic region: MuscatQatar
18. File 2794/1921 Pt 4 'Persian Gulf: oil: Bahrein.' Date: 1925/1930 Language: English Geographic region: Bahrain
19. File 2794/1921 Pt 6 'Persian Gulf: Oil - Bahrain (1933.)' Date: 1933/1933 Language: English Geographic region: Bahrain
20. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain' Date: 1933/1934 Language: English Geographic region: Bahrain
21. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain.' Date: 1931/1933 Language: English Geographic region: Bahrain
22. File 2794/1921 'PARTS 7, 8 & 9 BAHRAIN OIL CONCESSION, WIRELESS, TELEPHONES, AND CUSTOMS DUTIES &c.' Date: 1933/1935 Language: English Geographic region: Bahrain
23. File 2794/1921 Pt 6 'Persian Gulf: Oil: Bahrain' Date: 1934/1936 Language: English Geographic region: Bahrain
24. File 2794/1921 Pt 15 'Oil. Koweit Neutral Zone. On concessions in.' Date: 1933/1935 Language: English Geographic region: KuwaitKuwait-Saudi Arabia Neutral Zone