25. 'File 2/21 R.A.F. landing ground at Beit al Falaj (Petrol Store at Muscat).’ Date: 1938/1948 Language: English Geographic region: Bait al-FalajMasirah
26. 'File 2/6 KARACHI-ADEN AIR ROUTE. II-A/8' Date: 1942/1943 Language: English Geographic region: SalalahMasirahRas al-Hadd