25. 'Negotiations with Ibn Saud regarding Boundaries of Saudi Arabia' Date: 1949/1950 Language: English Geographic region: QatarBuraimi
26. 'File 9/35 Eastern Bank Branch in Qatar' Date: 1947/1950 Language: English Geographic region: Qatar
27. 'File 28/39 Roster of Petroleum Concessions Limited Employees' Date: 1947/1950 Language: English Geographic region: DubaiQatar
28. 'File 38/2 Petroleum Concessions Limited's Policy' Date: 1946/1948 Language: English Geographic region: Qatar
29. 'File 38/3 II P. C. L. Qatar Concession' Date: 1947/1949 Language: English Geographic region: QatarAl WakrahZubarah
30. 'File 38/3 I, P. C. L. Qatar Concession' Date: 1940/1947 Language: English Geographic region: Qatar
31. 'File 38/16 Effects of Bahrain-Qatar dispute on P. C. L.' Date: 1944/1948 Language: English Geographic region: ZubarahSitraQatarZekrit
32. 'File 73/7 II (D 22) Status of Koweit [Kuwait] - Baghdad railway, Anglo Turkish negotiations' Date: 1911/1912 Language: English Geographic region: BahrainQatarShatt al ʻArab
33. 'File 73/7 III (D 24) Status of Kuwait & Anglo-Turkish negotiations' Date: 1912/1913 Language: English Geographic region: BahrainQatarShatt al ʻArab
34. ‘Qatar Oil Concession and connected Documents [Oil concession granted by the Shaikh of Qatar to the Anglo-Persian Oil Company, 17 May 1935]’ Date: 1936/1937 Language: English Geographic region: Qatar
36. 'Military Report on the Arabian Shores of the Persian Gulf, Kuwait, Bahrein, Hasa, Qatar, Trucial Oman and Oman' Date: 1933/1933 Language: English Geographic region: BahrainKuwait