25. 'CONFIDENTIAL 86/28 - I Vol. D. 173 KUWAIT SULPHUR' Date: 1940/1945 Language: English Geographic region: Kuwait
26. 'CONFIDENTIAL 86/30 - II VOL. C.91. WIRELESS COMMUNICATION BETWEEN BAHRAIN AND SAUDI ARABIA' Date: 1942/1946 Language: English Geographic region: ʻAwālīDhahran
27. 'CONFIDENTIAL 86/31 VOL. B.64 OIL IN ITS RELATION TO THE MIDDLE EAST' Date: 1940/1945 Language: English Geographic region: Jabal NakshDhahranKhor-al-OdaidBahrain
28. ‘Original list of bound confidential files in the confidential office’ Date: 1947/1953 Language: English
29. 'File 1/A/43 II Defence Measures in the Persian Gulf.' Creator: Author: Board of Trade Date: 1939/1941 Language: English
30. 'File 1/A/48 I Control of Prices of standard foodstuffs in Bahrain.' Date: 1939/1941 Language: English Geographic region: Trucial Coast
32. 'File 1/A/48 III FOOD CONTROL.' Date: 1942/1942 Language: English Geographic region: Trucial Coast
35. ‘File 12/16 Merchant Shipping Acts and instructions to Consuls’ Date: 1931/1950 Language: English
36. ‘File 13/3 BOAC [British Overseas Airways Corporation] services’ Date: 1932/1950 Language: English Geographic region: Muharraq Aerodrome