13. ‘File 86/2 VI (C 46) Bahrain Oil’ Date: 1928/1933 Language: English Geographic region: BahrainSitrah
14. ‘File 86/2 X (C 52) Bahrain Oil’ Date: 1934/1934 Language: English Geographic region: BahrainSitrah
15. ‘File 86/2 XIII (C 61) Bahrain Oil’ Date: 1934/1935 Language: English Geographic region: BahrainSitrah
16. ‘File 86/2 XIV (C 67) Bahrain Oil’ Date: 1935/1937 Language: English Geographic region: BahrainSitrah
18. ‘File 86/2 II (C 31) Eastern and General Syndicate, Oil, Bahrain’ Date: 1929/1930 Language: English Geographic region: BahrainSitrah
19. ‘Oil concession signed by the Shaikh of Bahrein in favour of the Eastern and General Syndicate on the 2nd December 1925 (as revised up to 12th January 1934).’ Date: 1933/1933 Language: English
20. ‘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
21. 'Confidential 86/14-I. B.39. Petroleum Concessions Limited Bahrain' Date: 1936/1936 Language: English Geographic region: Bahrain
22. 'Confidential 86/14-ii B.47 PETROLEUM CONCESSIONS LTD. BAHRAIN' Date: 1936/1938 Language: English Geographic region: Fasht DibalHawar IslandsZubarahBahrain
23. 'File 82/1 II (F 53) A.P.O.C., and Oil Concession - Arab Coast' Date: 1923/1924 Language: English Geographic region: البحرينالكويتنجدكوهماندراس تنورهرأس تنورهزلاق
24. ‘File 86/2 V (C 44) Bahrain Oil’ Date: 1928/1933 Language: English Geographic region: BahrainSitrah