25. Nathaniel: Journal Date: 1714/1716 Language: English Geographic region: Mocha Extent: 1 volume (133 folios)
26. ‘File 35/137 IV (A 83) Muscat state budget’ Date: 1934/1941 Language: English Extent: 1 volume (208 folios)
27. Coll 29/9 'Duzdap: office allowance' Contributor: British Consulate, Seistan and Kain (correspondent)British Consulate General (correspondent)Government of India (correspondent)Persian Gulf Political Residency (correspondent) Date: 1930/1936 Language: English Extent: 1 file (39 folios)
28. File 1323/1917 Pt 3 'Mesopotamia: Postage Stamps for Mosul Vilayet.' Date: 1918/1920 Language: English Extent: 1 item (33 folios)
29. Draft journal of Lewis Pelly's journey from Kuwait to Riyadh and back Contributor: Sir Knight Lewis Pelly (creator)William Henry Colvill (creator)Sir Henry Bartle Edward Frere (creator)Sir Knight Frederic John Goldsmid (creator)Sir Knight William Henry Rodes Green (creator)Sir Knight Robert Phayre (creator)1st Earl of Northbrook Thomas George Baring (creator)Sir Knight William Lockyer Merewether (creator)William Gifford Palgrave (creator)Sir Knight Charles Umpherston Aitchison (creator) Date: 1865/1865 Language: English Geographic region: KoweitBaroda StateIranPersian GulfRajputanaRiyadhRussiaSindMuscatZanzibarAl-Hasa Extent: 1 file (35 folios)
30. 'Ext 4452/42 Activities of Sultan Beg Husseinzadeh' Contributor: British Embassy at Kuibyshev (correspondent)Foreign Office (correspondent) Date: 1942/1942 Language: English Extent: 1 file (7 folios)
31. Coll 28/129 ‘OIL; Oil concessions in North Persia; Request by Soviet Government.’ Contributor: Foreign Office (correspondent)HM Ambassador to Iran (correspondent) Date: 1944/1945 Language: EnglishFrench Extent: 1 file (325 folios)
32. 'Naval Staff monographs (historical) vol 4 no 15 - Naval operations in Mesopotamia and the Persian Gulf' Date: 1921/1921 Language: English Extent: 73 folios
33. File 4097/1914 Pt 5 'Mesopotamia: administration; personnel; loan of officers from Egypt and Sudan' Date: 1915/1921 Language: English Extent: 1 item (225 folios)
34. 'B 299. Mesopotamia. Note on Demobilisation by Civil Commissioner, Baghdad.' Contributor: Civil Commissioner, Mesopotamia (author) Date: 1918/1918 Language: English Geographic region: MesopotamiaBaghdad Extent: 4 folios
35. File 2182/1913 Pt 4 'Persian Gulf: Policy towards Bin Saud (Capt. Shakespear's Mission)' Contributor: Permanent Under-Secretary of State for India (correspondent)Political Agent, Kuwait (correspondent)Government of India, Foreign Secretary (correspondent)India Office (correspondent)War Office (correspondent)William Henry Irvine Shakespear (correspondent)Stuart George Knox (correspondent) Date: 1914/1916 Language: English Extent: 1 item (211 folios)
36. Coll 34/11 'Slavery and Slave Trade: Red Sea, Arabia and Persian Gulf: Investigations by Sir George Maxwell' Contributor: League of Nations, Advisory Committee of Experts on Slavery (correspondent; subject)Persian Gulf Political Residency (correspondent) Date: 1936/1939 Language: English Extent: 1 file (338 folios)