49. 'File 19/109 I (C 12) Bahrein Chief's relations with British Govt. and other Powers' Contributor: James Orton (correspondent)Francis Warden (correspondent)Hugh Weightman (correspondent) Date: 1903/1912 Language: EnglishFrenchPersianArabic Geographic region: BahrainBūshehr Extent: 1 volume (195 folios)
50. Letters to Lewis Pelly from local rulers and shaikhs, with translations in English. Date: 1863/1870 Language: ArabicEnglishPersian Extent: 1 file, 9 items (17 folios)
51. File 4949/1912 Pt 4 ‘Abu Musa – Angelegenheit. 1907.’ Contributor: German Chargé d’Affaires (correspondent)German Consul (correspondent)Government of the German Empire (correspondent)Robert Wönckhaus and Company (correspondent)Political Resident, Persian Gulf (correspondent) Date: 1907/1908 Language: GermanEnglishFrenchArabicPersian Geographic region: Abū Mūsá Extent: 1 file (263 folios)
52. File 2902/1916 ‘Treaties and Engagements between the British Government and the Chiefs of the Arabian Coast of the Persian Gulf’ Contributor: Emir of Kuwait (correspondent)Political Resident, Persian Gulf (correspondent)King of Bahrain (correspondent)Emir of Mohammerah (correspondent)Government of India, Foreign and Political Department (correspondent)Foreign Office, Political Intelligence Department (correspondent)Shah of Persia, Qajar dynasty (correspondent)Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent) Date: 1916/1928 Language: EnglishArabicPersian Geographic region: Persian Gulf Extent: 1 volume (222 folios)
53. File 9/2 II ‘No. 9/2 Vol. II Criminal Cases’ Contributor: Emir of Kuwait (correspondent) Date: 1919/1926 Language: EnglishArabicPersian Extent: 1 file (209 folios)
54. File 9/4 ‘Political Agency Koweit. IX/4. Civil Cases from 1909’ Date: 1908/1913 Language: EnglishFrenchArabicPersianTamil Extent: 1 file (299 folios)