13. 'File XIV A/1 IV Oil Concession in Muscat' Date: 1938/1939 Language: English Geographic region: Oman
14. 'File XVIII/4 coal, mining rights and monopolies Anglo- Persian Oil Company, 1921 to 1928.' Date: 1913/1928 Language: English Geographic region: Oman
15. 'File [XIV A/1 V] Oil concessions in Muscat' Date: 1939/1946 Language: English Geographic region: OmanDhofar
17. 'File 14/1 II Oil concession in Muscat' Date: 1937/1937 Language: English Geographic region: Oman
18. 'File 14/1 Vol 7 OIL CONCESSIONS MUSCAT [DHOFAR - BURAIMI - HUQF]' Date: 1949/1949 Language: English Geographic region: Al ḨuqfHuqfOmanDhofar
20. 'File 14/1- Vol 6 OIL CONCESSIONS MUSCAT' Date: 1936/1948 Language: English Geographic region: DhofarOman
21. 'File 14/1 PCL termination of Dhufar concession' Date: 1950/1951 Language: English Geographic region: OmanDhofar