1. '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)
2. '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)
3. 'File 2/10 1 II. AVIATION. ROYAL AIR FORCE. (1) Reconnaissance of Basrah, Aden, Muscat, Masirah, Murbat, Sauqrah Bay Etc. AIR ROUTE.' Contributor: Council of Ministers (correspondent; subject)Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent; subject)Royal Air Force (correspondent)Persian Gulf Political Residency (correspondent)Shaikh 'Īsá bin Ṣāliḥ al-Ḥārithī (correspondent; subject)Bertram Sidney Thomas (correspondent; subject) Date: 1926/1931 Language: EnglishArabic Geographic region: AdenSharjahAbu DhabiSoharBaraimiQishnSocotra Extent: 1 volume (233 folios)
4. Coll 30/110(3) 'Trucial Coast Oil Concessions: Hinterland Exploration and Survey. Trucial Coast Boundaries. Trucial Coast Surveys 1938-9.' Contributor: Petroleum Concessions Limited (correspondent)Political Resident, Persian Gulf (correspondent)Abu Dhabi Company for Onshore Oil Operations (correspondent)District Magistrate, Bahrain (correspondent)Petroleum Development Oman (correspondent)Assistant Political Agent, Bahrain (correspondent)Political Agent and Consul, Muscat (correspondent) Date: 1937/1943 Language: EnglishArabic Geographic region: Trucial CoastBaraimi Extent: 1 file (500 folios)
