2. ‘WAR DIARY. ARMY HEADQUARTERS, INDIA. […] I.E.F. “D”. Volume 28. PART II. (From 16th to 30th November 1916).’ Date: 1916/1916 Language: English Geographic region: Mesopotamia
3. ‘File 28/1 D Local Volunteer Defence Force. British N.C.O. Instructors for Defence Force’ Date: 1940/1942 Language: English Geographic region: Bahrain
4. ‘File 28/1 E Defence Officer, Persian Gulf. Station Commander Bahrain’ Date: 1939/1944 Language: English Geographic region: Bahrain
6. ‘File 28/1 L I BAPCO refinery guards’ Date: 1939/1942 Language: English Geographic region: Bahrain
8. ‘File 28/32 I Recruitment in Persian Gulf states’ Date: 1942/1943 Language: English Geographic region: BasraKuwaitMuscat
12. ‘File 28/61 War. BAPCO and A.I.O.C. – Attitude of employees regarding enlistment in armed forces at outbreak of war’ Date: 1939/1939 Language: English