25. ‘File 86/2 XIV (C 67) Bahrain Oil’ Contributor: Bahrain Petroleum Company (correspondent)Political Agent, Bahrain (correspondent) Date: 1935/1937 Language: English Geographic region: BahrainSitrah Extent: 1 volume (225 folios)
26. 'File 5/C Kuwait Najd Boundary' Contributor: Emir of Kuwait (correspondent)Emir of Najd and Hasa (correspondent) Date: 1920/1923 Language: EnglishArabic Geographic region: BahrainNajd Extent: 1 volume (231 folios)
27. ‘File 86/2 II (C 31) Eastern and General Syndicate, Oil, Bahrain’ Contributor: Bahrain Petroleum Company (correspondent)Bahrain Petroleum Company, Chief Local Representative (correspondent)Eastern and General Syndicate Limited, oil company (correspondent)Gulf Oil Corporation (correspondent)Political Agent, Bahrain (correspondent)Freshfields, Leese and Munns, solicitors, London (correspondent) Date: 1929/1930 Language: English Geographic region: BahrainSitrah Extent: 1 volume (251 folios)
28. 'Treaties and Undertakings etc in force between the British Government and the Rulers of Bahrain, 1820-1914' Date: 1914/1919 Language: EnglishArabic Geographic region: BahrainSitrahSitraNew DelhiSharjah Extent: 3 volumes (69 folios)
29. ‘Statements Showing Stocks of Food Held:– (a) By Bahrain Government. (b) By Trucial Coast. (c) By UKCC Pool at Bahrain’ Date: 1943/1950 Language: English Geographic region: BahrainTrucial Coast Extent: 1 volume (81 folios)
30. ‘Administration report on the Persian Gulf Political Residency and Maskat Political Agency for 1901-1902’ Contributor: Political Resident, Persian Gulf (author)Political Agent and Consul, Muscat (author)Assistant Political Agent, Bahrain (author)British Consul, Bandar Abbas (author) Date: 1902/1902 Language: English Geographic region: Persian GulfMuscatBahrainBandar-e ʻAbbās Extent: 1 volume (60 folios)
31. ‘Administration Report on the Persian Gulf Political Residency and Maskat Political Agency for 1902-03’ Contributor: Political Resident, Persian Gulf (author)Political Agent and Consul, Muscat (author)Assistant Political Agent, Bahrain (author)British Consul, Bandar Abbas (author)British Vice-Consul, Khorramshahr (author) Date: 1903/1903 Language: English Geographic region: Persian GulfMuscatBahrainBandar-e ʻAbbās Extent: 1 volume (34 folios)
32. ‘Administration Report on the Persian Gulf Political Residency and Maskat Political Agency for 1903-1904’ Contributor: Political Resident, Persian Gulf (author)Political Agent and Consul, Muscat (author)Assistant Political Agent, Bahrain (author)British Consul, Bandar Abbas (author)British Vice-Consul, Khorramshahr (author)Viceroy and Governor-General of India in Council (author) Date: 1904/1904 Language: English Geographic region: Persian GulfMuscatBahrainBandar-e ʻAbbās Extent: 1 volume (37 folios)
33. ‘Administration Report on the Persian Gulf Political Residency and Maskat Political Agency for 1904-1905’ Contributor: Political Resident, Persian Gulf (author)Political Agent and Consul, Muscat (author)British Vice-Consul, Bushire (author)British Consul, Bandar Abbas (author)British Consul, Arabistan (author)Kuwait Political Agency, Assistant Surgeon (author)Assistant Political Agent, Bahrain (author)Political Agent, Kuwait (author) Date: 1906/1906 Language: English Geographic region: MuscatBandar-e ʻAbbāsKuwaitBushirePersian GulfArabistanBahrain Extent: 1 volume (89 folios)
34. 'Military Report on the Arabian Shores of the Persian Gulf, Kuwait, Bahrein, Hasa, Qatar, Trucial Oman and Oman' Date: 1933/1933 Language: English Geographic region: BahrainKuwaitQatarAl-HasaOmanTrucial Oman Extent: 1 volume (112 folios)
35. ‘Table of Court Fees. For P.A’s office’ Contributor: Bahrain Political Agency (author) Date: 1933/1933 Language: English Geographic region: Bahrain Extent: 1 file (6 folios)