37. Coll 30/195 ‘Persian Gulf Defence QATAR.’ Date: 1938/1943 Language: English Geographic region: Qatar
38. Coll 30/196 ‘Persian Gulf Defence. Muscat. War Subsidy’ Date: 1938/1951 Language: English Geographic region: Muscat
39. Coll 30/198 ‘Persian Gulf Defence : - ABADAN.’ Date: 1942/1943 Language: English Geographic region: PersiaAbadan
40. File 57/1928 Pt 2 'Iraq-Nejd Relations: Frontier Situation' Date: 1928/1928 Language: English Geographic region: Koweit
42. File 57/1928 Pt 6 'Iraq-Nejd Relations: Koweit Situation. Air and Car Reconnaisances.' Date: 1927/1929 Language: English Geographic region: Koweit
43. File 57/1928 Pt 12 'Iraq-Nejd Relations: Koweit Frontier Situation.' Date: 1929/1930 Language: English