37. 'Arabic Bound File No 5' Date: 1900/1905 Language: EnglishArabicPersian Extent: 1 file (205 folios)
38. 'Arabic/English File No. 7' Date: 1897/1903 Language: EnglishArabicPersian Extent: 1 file (287 folios)
39. 'File 1/A/23 I Activities of the Persian Navy' Date: 1933/1937 Language: EnglishArabicPersian Extent: 1 volume (254 folios)
40. 'File 5/1 III Kuwait Oil Company' Contributor: Anglo-Iranian Oil Company Limited (correspondent)Emir of Kuwait (correspondent)Political Resident, Persian Gulf (correspondent) Date: 1924/1931 Language: EnglishArabicPersianFrench Extent: 1 Volume (379 folios)
41. 'File 16/00 Letters of good offices' Date: 1928/1931 Language: EnglishArabicPersian Extent: 1 file (136 folios)
42. 'File 5/193 I (B 23) Slavery in the Gulf' Date: 1924/1929 Language: EnglishArabicPersian Extent: 1 volume (216 folios)
43. 'File 20/1- Vol: III Ceremonial and Celebrations: New Year's and King's Birthday's Celebrations.' Contributor: Adviser to the Government of Bahrain (correspondent)Shaikh Hakim of Bahrain Ḥamad bin 'Īsá Āl Khalīfah (correspondent) Date: 1935/1939 Language: EnglishArabicPersian Extent: 1 file (283 folios)
44. 'File 23/1 Acquisition of property in Bahrain by Shaikh Muhammad ibn `Isa Al Khalifa; Hindu Bathing Pool' Contributor: Bahrain Political Agency (creator) Date: 1928/1929 Language: EnglishArabicPersian Extent: 1 file (14 folios)
45. 'File 3/8 Books etc: Transliteration of vernacular names and places.' Date: 1903/1932 Language: EnglishPersianArabicPashto Extent: 1 file (81 folios)
46. 'File 5/197 I – Absconding of Slaves from Sharja and Henjam' Contributor: Senior Naval Officer in the Persian Gulf (correspondent) Date: 1930/1934 Language: EnglishArabicPersian Extent: 1 volume (202 folios)
47. 'List Showing the Names, Titles and Modes of Address of the More Important Sovereigns, Ruling Princes, Chiefs, Nobles etc., Having Relations with the Indian Government, Alqabnamah' Contributor: James Orton (correspondent)Francis Warden (correspondent) Date: 1935/1935 Language: EnglishPersianArabic Geographic region: BūshehrAbū-ShahrHormuz Isle Extent: 1 volume (71 folios)
48. 'File 8/2 Public petitions etc. Letters to Major Daly (P.A.) thanking him for his interest in Bahrain affairs' Contributor: Bahrain Political Agency (creator) Date: 1921/1924 Language: EnglishArabicPersian Extent: 1 file (33 folios)