1. 'File 9/12 Gray, Mackenzie & Co Ltd: affairs and activities in Bahrain' Date: 1934/1949 Language: English
4. 'File 9/36 Contract between Air Headquarters and Gray Mackenzie Limited' Date: 1947/1947 Language: English
6. ‘File 16/57 II Routine correspondence with Agencies and Consulates other than Bushire.’ Date: 1947/1949 Language: English
7. ‘File 16/27 Miscellaneous. Miscellaneous Assistance to Government Officials’ Date: 1920/1954 Language: English
9. File 16/57 I Routine correspondence with British agencies and consulates other than Bushire Date: 1944/1947 Language: English