25. ‘File 86/2 XI (C 53) Bahrain Oil’ Date: 1933/1934 Language: English Geographic region: BahrainSitrah
26. ‘File 86/2 XV (C 86) Bahrain Oil’ Date: 1937/1942 Language: English Geographic region: BahrainSitrah
27. ‘File 86/2 IX (C 50) Bahrain Oil’ Date: 1934/1934 Language: English Geographic region: BahrainSitrah
28. ‘File 86/2 XII (C 54) Bahrain Oil’ Date: 1934/1934 Language: English Geographic region: BahrainSitrah
29. 'File 28/5 Visits of Tankers and other Ships to Sitrah' Date: 1934/1936 Language: English Geographic region: Sitra
30. 'File 6/63 Use of Sitrah as a harbour by steamers' Date: 1934/1934 Language: English Geographic region: Sitrah
31. ‘Annex to File 86/2 Bahrain Concession Duplicate’ Date: 1923/1923 Language: English Geographic region: BahrainSitrah
32. ‘REDUCED COPY OF CHART OF THE GULF OF PERSIA. Constructed from the Trigonometrical Surveys. Made by Order of THE HONBLE THE COURT OF DIRECTORS OF THE UNITED ENGLISH EAST INDIA COMPANY and to whom it is Respectfully Dedicated by their most obedient Servant GEORGE BARNES BRUCKS Commander H.C. Marine. 1830’ Date: 1856/1856 Language: English Geographic region: الخليج العربيمسقطالبحرينالكويتالإمارات المتصالحةقطرسِتْرة
33. 'File 28/5 II Visit of Tankers etc to Sitrah & Shipments of oil (Royalty Tickets)' Date: 1936/1938 Language: English Geographic region: Sitra
34. 'A Collection of Treaties and Engagements relating to the Persian Gulf Shaikhdoms and the Sultanate of Muscat and Oman in force up to the End of 1953' Date: 1954/1959 Language: English Geographic region: مسقطالبحرينالكويتالإمارات المتصالحةقطرسِتْرةنيودلهي
35. 'Historical Summary of Events in the Persian Gulf Shaikhdoms and the Sultanate of Muscat and Oman, 1928-1953' Date: 1953/1958 Language: English Geographic region: مسقطالبحرينالكويتالإمارات المتصالحةقطرسِتْرةنيودلهي
36. 'Historical Summary of Events in the Persian Gulf Shaikhdoms and the Sultanate of Muscat and Oman, 1928-1953: Appendices, Genealogical Tables' Date: 1953/1958 Language: English Geographic region: مسقطالبحرينالكويتالإمارات المتصالحةقطرسِتْرةنيودلهي