1. This paper is based upon research for my doctoral dissertation in history, “Aviation and Empire: the British African Experience, 1919–1939,” Dalhousie University, 1974.
2. A bibliography of European imperialism in Africa would be out of place here, but see Michael Crowder, West Africa under Colonial Rule (London, 1968), for a recent assessment.
3. Sir Alan Cobham, the famous air pioneer of the 1920s.