14. Coll 6/31 'Hejaz: Hejaz-Polish Relations. Polish Arms for Ibn Saud.' Date: 1929/1934 Language: English
15. Coll 6/48 'Oil: Concessions in Saudi Arabia. (Hasa)' Date: 1923/1945 Language: English Geographic region: QatarKuwaitBahrainHasa
16. Coll 6/49 'Railways and Communications: Proposed Jedda-Mecca Railway. Motor Transport Arrangements.' Creator: Author: King of Saudi Arabia Date: 1932/1939 Language: English Geographic region: ArafatJeddaMecca
17. Coll 6/76 'Saudi Arabia: Oil concessions over the Red Sea littoral.' Date: 1936/1937 Language: English Geographic region: Saudi Arabia