1. '86/12-III CONFIDENTIAL A. 85 P.C.L. MUSCAT' Date: 1937/1944 Language: English Geographic region: OmanMuscatDhofar
2. '['Pre-Emption'] Agreement... between His Majesty's Government in the United Kingdom... and Petroleum Development (Oman and Dhofar) Limited' Date: 1938/1938 Language: English Geographic region: Sultanate of Muscat and OmanDhofar
3. 'General agreement... [between] His Majesty's Government in the United Kingdom and Petroleum Development (Oman and Dhofar) Limited' Date: 1938/1938 Language: English Geographic region: Dhofar