13. 'File 14/1 PCL termination of Dhufar concession' Date: 1950/1951 Language: English Geographic region: OmanDhofar
15. 'File 2/25 II. Aviation. B. Royal Air Force. 3. (o) Shuwaimiyah Landing Ground and Petrol Store.' Date: 1938/1945 Language: English Geographic region: ShuwaymiyahDhofarMasirah
16. 'File 14/5 Mineral deposits in Dhufar' Date: 1940/1948 Language: English Geographic region: Dhofar
17. 'File 8/90 II ECONOMIC, Agricultural & INDUSTRIAL DEVELOPMENT IN MUSCAT TERRITORY' Date: 1948/1950 Language: English Geographic region: Dhofar
18. 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
19. Coll 30/110(4) 'Trucial Coast Oil Concession: Muscat Oil Concession. Hinterland Exploration & Survey.' Date: 1945/1948 Language: English Geographic region: Trucial CoastDhofarSultanate of Muscat and Oman