49. 'Gazetteer of the Persian Gulf. Vol I. Historical. Part IA & IB. J G Lorimer. 1915' Creator: Author: John Gordon LorimerAuthor: Richard Lockington Birdwood Date: 1915/1915 Language: English Geographic region: الخليج العربيشبه الجزيرة العربيةالبحرينعُماننجدعُمان المُتصالحةالعراق التركيةالكويت
50. 'Gazetteer of the Persian Gulf. Vol. II. Geographical and Statistical. J G Lorimer. 1908' Creator: Author: John Gordon Lorimer Date: 1908/1908 Language: English Geographic region: بلوشستانعربستانالبحرينالكويتعُمانالخليج العربيقطرعُمان المُتصالحة
51. 'Confidential 86/12-i A. 70 Petroleum Concessions Limited. MUSCAT' Date: 1936/1937 Language: English Geographic region: OmanMuscat
52. 'CONFIDENTIAL 86/12-ii A.75. P.C.L. MUSCAT' Date: 1937/1937 Language: English Geographic region: OmanMuscatDhofar
55. ‘Affairs of the Persian Gulf.’ Date: 1847/1848 Language: English Geographic region: OmanPersian Gulf
59. 'Vol. D.16 (File 61/4) Bin Saood - Amir of Nejd's intention to visit Pirate Coast and Oman in 1905' Date: 1905/1907 Language: English Geographic region: OmanAl-HasaTrucial Coast
60. Coll 30/5 'Persian Gulf. Diaries: Bushire Residency (Persian), Jany. 1931 - Dec. 1940' Creator: Author: Persian Gulf Political Residency Date: 1931/1941 Language: English Geographic region: BahrainOmanKuwait