1. The Tropics and the Travelling Gaze;Arnold,2006
2. Globalisation and Its Terrors;Brennan,2003
3. The Colonial Earth;Bonyhady's,2000
4. The encroachment of the Sahara on the Sudan;Bovill;Journal of the Royal African Society,1921
5. The Master of All They Surveyed, Exploration, Geography and a British Eldorado;Burnett,2000