1. 'Agreement for the exploitation of sulphur in Kuwait [between] His Majesty's Government in the United Kingdom and Eastern Gulf Oil Company Limited' Date: 1940/1940 Language: English Geographic region: Kuwait
2. 'CONFIDENTIAL 86/28 - I Vol. D. 173 KUWAIT SULPHUR' Date: 1940/1945 Language: English Geographic region: Kuwait
6. Coll 30/188 'Kuwait: Mining for Sulphur by Kuwait Oil Coy.' Date: 1940/1945 Language: English Geographic region: Kuwait