85. '35/101 V (A 49) Muscat Miscellaneous' Contributor: Financial Advisor to the Sultan of Muscat (correspondent)Emir of Ja'alān (correspondent) Date: 1925/1928 Language: English Geographic region: Oman Extent: 1 volume (118 folios)
86. ‘35/110 Muskat Transfer of Oman Subjects to Other Nationalities; 35/102 Request of Musallam bin Juma bin Salim al Ja’davi for registration of his Dhow 1912 (Vide case of 3 Omanis and German Consul – 35/101); German Flag Case 1912-to-1914 A 28’ Date: 1912/1914 Language: EnglishGerman Extent: 1 volume (97 folios)
87. '35/149 I (A 67) Batineh date trade. Dowson's reports' Contributor: Valentine Hugh Wilfred Dowson (author) Date: 1927/1931 Language: English Geographic region: Batinah Coast Extent: 1 volume (78 folios)
88. '86/1 VIII Kuwait Oil D 106' Contributor: Air Ministry (correspondent)Air Officer Commanding, Iraq (correspondent)Arabian Development Syndicate Limited (correspondent)British Legation to Saudi Arabia (correspondent)Arabian American Oil Company (correspondent)Political Agent, Kuwait (correspondent)Emir of Kuwait (correspondent)Kuwait Oil Company (correspondent)Traders Limited, Basra (correspondent)Fuad Bey Hamza (correspondent) Date: 1934/1934 Language: English Geographic region: KuwaitShuwaikh Extent: 1 volume (346 folios)
89. '86/1 X Kuwait Oil (D 131)' Contributor: Anglo-Iranian Oil Company Limited (correspondent)Arabian Development Syndicate Limited (correspondent)British Legation to Saudi Arabia (correspondent)Arabian American Oil Company (correspondent)Secretary of State for India, United Kingdom (correspondent)Political Agent, Kuwait (correspondent)Emir of Kuwait (correspondent)Kuwait Oil Company (correspondent)Traders Limited, Basra (correspondent) Date: 1935/1937 Language: EnglishArabicPersian Geographic region: Ras KhadamaKuwaitShuwaikhBahra Extent: 1 file (240 folios)
90. '86/1 XII (D 175) Kuwait Oil' Contributor: Arabian Development Syndicate Limited (correspondent)Arabian American Oil Company (correspondent)Kuwait Oil Company (correspondent)Political Agent, Kuwait (correspondent)Emir of Kuwait (correspondent)Petroleum Division (correspondent)Frank Holmes (correspondent) Date: 1941/1946 Language: EnglishArabic Geographic region: Kuwait Extent: 1 volume (227 folios)
91. '86/12-III CONFIDENTIAL A. 85 P.C.L. MUSCAT' Contributor: India Office (correspondent)Political Agent, Bahrain (correspondent)Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent)Petroleum Development Oman (correspondent)Political Agent and Consul, Muscat (correspondent) Date: 1937/1944 Language: EnglishArabic Geographic region: OmanMuscatDhofar Extent: 1 volume (278 folios)
92. '86/21 - II P.C.L. Exploration of Trucial Hinterland. B 51' Contributor: Petroleum Concessions Limited (correspondent)Political Agent, Bahrain (correspondent)Native Agent, Trucial Coast, Sharjah (correspondent)Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent)Assistant Political Agent, Bahrain (correspondent)Political Agent and Consul, Muscat (correspondent) Date: 1938/1938 Language: English Geographic region: BaraimiJebel HafitMuscatJebel Faiyah Extent: 1 file (142 folios)
93. '86/21 - III B.65. Trucial Hinterland Exploration' Contributor: Petroleum Concessions Limited (correspondent)Abu Dhabi Company for Onshore Oil Operations (correspondent)Political Agent, Bahrain (correspondent)Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent)Political Agent and Consul, Muscat (correspondent) Date: 1939/1945 Language: English Geographic region: BaraimiJebel HafitMuscatJebel Faiyah Extent: 1 file (126 folios)
94. '180 Administration Report 1918 & later.' Date: 1919/1921 Language: English Extent: 1 file (58 folios)
95. '189 Trade Report of Bahrain Islands.' Date: 1918/1950 Language: English Geographic region: ArabistanBushire Extent: 2 volumes (374 folios)
96. '189 Trade Report, Bahrain Islands. From 1923-1924.' Date: 1924/1924 Language: English Extent: 1 file (8 folios)