1. Coll 5/20 ‘Air Route to India – Arab Coast Secn: Negotiations with Trucial Sheikhs’ Date: 1932/1940 Language: English Geographic region: Trucial CoastSharjah
2. Coll 5/25 ‘Air Route to India (Arab Coast): Landing Ground at Bahrain; Bahrain Civil Air Agreement; Cessation of "C" class service’ Date: 1945/1948 Language: English Geographic region: Bahrain
