1. ‘Persian Gulf – Affairs of. Vol: 2’ Date: 1842/1843 Language: English Geographic region: BushireBahrein
2. 'File K/15 Visits and Interviews of Members of the Al Khalifa family with the Political Agent, Bahrain' Date: 1933/1937 Language: English
3. 'File K/18 Interviews and visits of Bahrain notables with Political Agent and the Political Resident' Date: 1933/1947 Language: English
4. 'File K/19 Interviews of foreigners with the Political Agent and the Political Resident' Date: 1934/1947 Language: English