49. 'File 9-B/4 Naval and Shipping: Visit of Siam's Training Ship' Contributor: British Legation (correspondent)Government of Siam (correspondent)Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent)Foreign Office (correspondent) Date: 1936/1937 Language: English Extent: 1 file (30 folios)
50. 'File 2/5 Pilgrims: Precautions for Haj and others' Contributor: Foreign Office (correspondent)India Office (correspondent)Ministry of Foreign Affairs (author)British Embassy in Saudi Arabia (correspondent)Government of Bahrain, Āl Khalīfa dynasty (correspondent) Date: 1926/1950 Language: EnglishArabic Extent: 1 file (116 folios)
51. ‘File 13/4 I Facilities for foreign air companies to use Arabian Air Route’ Contributor: Foreign Office (correspondent) Date: 1932/1937 Language: EnglishFrenchArabic Geographic region: Muharraq Aerodrome Extent: 1 volume (222 folios)
52. 'File 14/3 Foreign Interests - American (General)' Contributor: Foreign Office (correspondent)Persian Gulf Political Residency (correspondent)HM Ambassador to Saudi Arabia (correspondent) Date: 1944/1949 Language: English Geographic region: HadhramautManamaJeddahSaudi Arabia Extent: 1 file (13 folios)
53. 'File 14/6 Postal commission on Government Servants' money orders' Contributor: Foreign Office (correspondent)Sub-Postmaster, Bahrain (correspondent)Director of Posts and Telegraphs, Sind and Baluchistan Circle, Karachi (correspondent)Post-Master General, Bombay (correspondent) Date: 1909/1942 Language: English Extent: 1 file (44 folios)
54. 'File 14/15 Money order and cash-on-delivery services between UK and the Gulf' Contributor: Foreign Office (correspondent) Date: 1950/1950 Language: English Extent: 1 file (4 folios)
55. 'File 21/20 Airways, Private Aviators' Contributor: Foreign Office (correspondent)French Embassy, London (correspondent)Political Resident, Persian Gulf (correspondent)British Embassy in Iraq, Baghdad (correspondent)Air Officer Commanding, Iraq (correspondent)Shaikh Hakim of Bahrain Ḥamad bin 'Īsá Āl Khalīfah (correspondent) Date: 1932/1939 Language: EnglishFrenchArabic Geographic region: Persian Gulf Extent: 1 volume (142 folios)
56. 'File 21/36 Miscellaneous correspondence with British Overseas Airways Corporation' Contributor: Foreign Office (correspondent)Persian Gulf Political Residency (correspondent)British Overseas Airways Corporation (correspondent) Date: 1947/1950 Language: EnglishArabic Extent: 1 file (356 folios)
57. ‘File 22/7 Fujairah’ Contributor: Political Agent, Trucial Coast (correspondent)Shaikh of Fujairah (correspondent)Foreign Office (correspondent) Date: 1951/1951 Language: English Geographic region: Trucial CoastFujairah Extent: 1 file (21 folios)
58. ‘File 25/8 Eire and the Commonwealth’ Contributor: Foreign Office (correspondent) Date: 1948/1948 Language: English Geographic region: Ireland Extent: 1 file (4 folios)
59. ‘File 28/1 J Sabotage to oil wells, etc’ Contributor: Middle East Intelligence Centre (correspondent)Foreign Office (correspondent) Date: 1939/1940 Language: English Extent: 1 file (11 folios)
60. ‘File 28/51 Anglo – American relations (policy)’ Contributor: Foreign Office (correspondent) Date: 1944/1944 Language: English Extent: 1 file (15 folios)