1. '11/1 TREATMENT OF BAHARNA IN HASA AND QATIF' Date: 1914/1950 Language: English Geographic region: HasaQatif
3. '11/18 EXCHANGE OF MAILS BETWEEN HASA & BAHRAIN' Date: 1932/1940 Language: English Geographic region: QatifHofufHasa
4. 'Procedure re Claims against Hasawis. Correspondence with the Amir of Hasa' Date: 1933/1933 Language: English Geographic region: HasaNejd
5. 'ROAD MAP PRESENT OPERATIONS PROVINCE OF HASA SAUDI ARABIA' Date: 1940/1940 Language: English Geographic region: HasaArabian Peninsula
6. 'ROAD MAP Present Operations PROVINCE OF HASA, SAUDI ARABIA.' Date: 1940/1940 Language: English Geographic region: Arabian PeninsulaHasa
7. 'Confidential D 107 86/5-I Eastern and General Syndicate Ltd. - Saudi Arabia' Date: 1933/1935 Language: English Geographic region: Saudi ArabiaKuwaitHasa
8. Sketch map showing approximate area served by Bahrain as a distributing port Date: 1918/1918 Language: English Geographic region: BahrainHasaNajdQatar
9. Coll 30/185 'OIL: Hasa Oil. Qn of a pre-emption agreement.' Date: 1938/1940 Language: English Geographic region: Hasa
10. Coll 30/31 'Hasa Coast; Entry of Hindu Merchants into Hasa; Attitude of Ibn Saud' Date: 1928/1934 Language: English Geographic region: QatifHasa
11. Coll 5/1 ‘Persian Gulf Air Routes: Hasa Coast & Flying over Nejd territory — Saudi regulations for the landing of foreign aircraft’ Date: 1931/1937 Language: English Geographic region: Saudi ArabiaHasa
12. Coll 6/48 'Oil: Concessions in Saudi Arabia. (Hasa)' Date: 1923/1945 Language: English Geographic region: QatarKuwaitBahrainHasa