1. '86/21 - II P.C.L. Exploration of Trucial Hinterland. B 51' Date: 1938/1938 Language: English Geographic region: BaraimiJebel HafitMuscatJebel Faiyah
2. '86/21 - III B.65. Trucial Hinterland Exploration' Date: 1939/1945 Language: English Geographic region: BaraimiJebel HafitMuscatJebel Faiyah
3. 'File 38/1 II P. C. L. Exploration' Date: 1947/1949 Language: English Geographic region: Trucial CoastBuraimi
4. 'File 38/1 Vol I, P. C. L. Exploration' Date: 1945/1947 Language: English Geographic region: Jabal FaiyahBuraimiWadi Al GorTrucial Coast
6. Pol Ext 8303/49 'Geology and mineral resources of Dhofar: request for reports of A L von Krafft and R P Oldham 1900-01' Date: 1949/1949 Language: English Geographic region: OmanDhofar
7. File 1421/1908 Pt 5 'Persia: oil; Anglo-Persian Oil Co's surveys' Date: 1909/1910 Language: English