1. '86/21 - II P.C.L. Exploration of Trucial Hinterland. B 51' Date: 1938/1938 Language: English Geographic region: BaraimiJebel HafitMuscatJebel Faiyah
2. '86/21 - III B.65. Trucial Hinterland Exploration' Date: 1939/1945 Language: English Geographic region: BaraimiJebel HafitMuscatJebel Faiyah
