37. Vol 3 Letters Outward (from Bushire) Date: 1778/1787 Language: English Geographic region: MuscatZubarah
38. Part of the Arabian side of the Persian Gulf; from Core Abdullah to Ras Reccan, Surveyed by Lieutenants J.M. Guy, G.B. Brucks, & W.E. Rogers, H.E.I.Cs. Marine, 1825. ‘Sheet, 2 and 4. Engraved by R. Bateman’ Date: 1829/1829 Language: English Geographic region: Al-HasaBahrainQatarShatt al ʻArab
39. Sketch map showing approximate area served by Bahrain as a distributing port Date: 1918/1918 Language: English Geographic region: BahrainHasaNajdQatar
40. Sketch map of Bahrain and surrounding ports Date: 1919/1919 Language: English Geographic region: ZubarahAl-Hasa
41. Sketch map of Bahrain and surrounding ports Date: 1920/1920 Language: English Geographic region: ZubarahAl-Hasa
42. Persian Gulf Affairs Date: 1840/1840 Language: English Geographic region: خارج (جزيرة)بلاد فارسالخليج العربيالبحرينقشمالقطيفالأحساءمسقط
43. Coll 30/185 'OIL: Hasa Oil. Qn of a pre-emption agreement.' Date: 1938/1940 Language: English Geographic region: Hasa
44. Coll 30/31 'Hasa Coast; Entry of Hindu Merchants into Hasa; Attitude of Ibn Saud' Date: 1928/1934 Language: English Geographic region: QatifHasa
45. Coll 5/1 ‘Persian Gulf Air Routes: Hasa Coast & Flying over Nejd territory — Saudi regulations for the landing of foreign aircraft’ Date: 1931/1937 Language: English Geographic region: Saudi ArabiaHasa
46. Coll 6/48 'Oil: Concessions in Saudi Arabia. (Hasa)' Date: 1923/1945 Language: English Geographic region: QatarKuwaitBahrainHasa
47. Coll 6/60 'Saudi Arabia: Oil Concessions in Asir and the Farsan Islands.' Date: 1933/1934 Language: English Geographic region: HasaʻAsīrFarsan Islands
48. Notes Prepared for Reference during Curzon’s Tour of the Persian Gulf, and Other Papers on Persia and the Persian Gulf Creator: Author: Agent to the Governor-General, Resident and Chief Commissioner, Baluchistan Date: 1895/1903 Language: English Geographic region: PersiaPersian GulfKoweit