49. 'File 19/243 IV Zubarah' Date: 1946/1948 Language: English Geographic region: ZubarahBahrainBūshehr
50. 'File 19/243 II (C 72) Zubarah' Date: 1937/1937 Language: English Geographic region: ZubarahQatar
51. 'File 19/248 III (C 88) Education at Bahrain' Date: 1941/1945 Language: English Geographic region: BahrainBūshehr
52. 'File 19/252 Bahrain Water Supply' Date: 1939/1942 Language: English Geographic region: BahrainBūshehr
54. 'File A/14 Shaikh Hamad bin Muhammad Al Khalifa and his intrigues with the Turkish authorities' Date: 1904/1916 Language: English
55. 'File A/18 Majlis al-Urfi: Correspondence regarding its Composition; also connected correspondence regarding "Jurisdiction"' Date: 1919/1920 Language: English
56. 'File XXII 4 Koweit relations with Bahrain.' Date: 1906/1920 Language: English Geographic region: KoweitZubaraBahrain
57. 'File 9/2 I Bahrain Reforms: Finances of the Bahrain Government' Date: 1923/1933 Language: English
59. ‘File 16/5 Bahrain Agency: fortnightly political diaries’ Date: 1930/1931 Language: English Geographic region: QatifNejdQatar
60. ‘File 16/9 II Id Calls and letters of greetings etc’ Date: 1933/1936 Language: Arabic Geographic region: Manama