25. ‘File 2/32 ACQUISITION OF PERMANENT AIR FACILITIES’ Contributor: Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent; subject) Date: 1944/1948 Language: EnglishArabic Geographic region: Masirah Extent: 1 file (167 folios)
26. 'File No. E/19 V. O. MISCELLANEOUS CORRESPONDENCE REGARDING LOCAL MURDER CASES.' Contributor: King of Bahrain (correspondent)Adviser to the Government of Bahrain (correspondent) Date: 1935/1935 Language: EnglishArabic Extent: 1 file (9 folios)
27. 'File A/14 Shaikh Hamad bin Muhammad Al Khalifa and his intrigues with the Turkish authorities' Contributor: Bahrain Political Agency (creator) Date: 1904/1916 Language: EnglishArabicTurkish, Ottoman (1500-1928) Extent: 1 volume (123 folios)
28. 'File 10/16 Legislation for preventing the import and sale in Bahrain of foreign imitations of British designs' Contributor: Bahrain Political Agency (creator) Date: 1940/1940 Language: EnglishArabic Extent: 1 file (24 folios)
29. '86/1 XII (D 175) Kuwait Oil' Contributor: Arabian Development Syndicate Limited (correspondent)Arabian American Oil Company (correspondent)Kuwait Oil Company (correspondent)Political Agent, Kuwait (correspondent)Emir of Kuwait (correspondent)Petroleum Division (correspondent)Frank Holmes (correspondent) Date: 1941/1946 Language: EnglishArabic Geographic region: Kuwait Extent: 1 volume (227 folios)
30. 'File A/2 VI Correspondence regarding slaves applying for manumission at Muscat' Date: 1943/1951 Language: EnglishArabic Extent: 1 file (77 folios)
31. Coll 35/20 'Persian Gulf: Bahrain; installation of a telephone communication between the wireless station of Imperial and International Communications Ltd at Manamah and the landing ground at Muharraq' Contributor: Persian Gulf Political Residency (correspondent)Bahrain Political Agency (correspondent)Foreign Office (correspondent)General Post Office (correspondent)Adviser to the Government of Bahrain (correspondent)Cable and Wireless Ltd (correspondent) Date: 1934/1947 Language: EnglishArabic Geographic region: Bahrain Extent: 1 file (214 folios)
32. 'File 11/34 Defence: Muscat War Subsidy' Contributor: Sultan of Muscat and Oman, Āl Bū Sa'īd Dynasty (correspondent)Persian Gulf Political Residency (correspondent) Date: 1941/1948 Language: EnglishArabic Extent: 1 file (220 folios)
33. 'File 19/3 II Visits of His Excellency the Naval Commander in Chief' Contributor: Mesopotamia Persia Corporation Limited (correspondent)Bahrain Petroleum Company (correspondent)Adviser to the Government of Bahrain (correspondent)King of Bahrain (correspondent)Political Agent, Trucial Coast (correspondent)Emir of Qatar (correspondent)Royal Navy, Commander-in-Chief, East Indies Station (correspondent)Shaikh Muḥammad bin ̔Īsá Āl Khalifah (correspondent) Date: 1932/1935 Language: EnglishArabic Extent: 1 file (334 folios)
34. 'File 3/6 Agency Medical Officer' Date: 1932/1941 Language: EnglishArabic Extent: 1 file (56 folios)
35. ‘File 5/196 I Slave traffic in the Gulf: Hindu boys kidnapped from Karachi and other cases’ Date: 1927/1930 Language: EnglishArabic Geographic region: PersiaBaluchistanTrucial CoastZellaq Extent: 1 volume (312 folios)
36. Table entitled 'Principal Tribes of Oman' Date: 1872/1872 Language: EnglishArabic Extent: 1 folio