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)
