49. 'Confidential 86/7-v B.41 PETROLEUM CONCESSIONS LTD., TRUCIAL COAST' Contributor: Petroleum Concessions Limited (correspondent)Political Agent, Bahrain (correspondent)Native Agent, Trucial Coast, Sharjah (correspondent) Date: 1936/1937 Language: EnglishArabicPersian Geographic region: Abu DhabiAjmanDebaiRas al Khaimah Extent: 1 volume (302 folios)
50. 'Vol-B.44. Confidential 86/7-vii. P.C.L. TRUCIAL COAST' Contributor: India Office (correspondent)Petroleum Concessions Limited (correspondent)Political Agent, Bahrain (correspondent)Native Agent, Trucial Coast, Sharjah (correspondent) Date: 1937/1937 Language: EnglishArabicPersian Geographic region: Sharjah Extent: 1 volume (198 folios)
51. 'File 26/185 V (F 96) Shaikh of Mohammerah' Contributor: Foreign Office (correspondent)Political Agent, Kuwait (correspondent)HM Ambassador to Iraq (correspondent)Shaikh 'Abdullah bin Khaz'al Āl Ka'bī (correspondent)Shaikh Jāsib bin Khaz'al al-Ka'bī (correspondent) Date: 1939/1946 Language: EnglishArabicPersian Extent: 1 volume (233 folios)
52. ‘File 12/14 Shipping. Miscellaneous accidents between dhows and steamers’ Contributor: Adviser to the Government of Bahrain (correspondent)British Consul, Khorramshahr (correspondent)Senior Naval Officer in the Persian Gulf (correspondent) Date: 1943/1949 Language: EnglishArabicPersian Geographic region: DubaiKhorramshahrSharjah Extent: 1 file (28 folios)
53. 'File 29/18 II Tea and coffee: Bahrain, Eastern Saudi Arabia and Qatar' Contributor: Adviser to the Government of Bahrain (correspondent)Political Resident, Persian Gulf (correspondent)Government of Bahrain, Food Controller (correspondent)Government of India, Commerce Department (correspondent)Director of Customs and Port Officer (correspondent)Tea Controller for India (correspondent)Indian Political Service, External Affairs Department (correspondent)Persian Gulf States Pool, Chairman (correspondent) Date: 1944/1946 Language: EnglishArabicPersian Geographic region: Saudi ArabiaQatar Extent: 1 file (223 folios)
54. '[Un-numbered file] Export of Currency notes from BAHRAIN' Contributor: Arabian American Oil Company (correspondent)Imperial Bank of Iran (correspondent)Eastern Bank Limited (correspondent) Date: 1947/1948 Language: EnglishArabicPersian Extent: 1 file (64 folios)