1. The Shinyanga Game Destruction Experiment
2. Du Frayer, A. G. H. (1951). Annual Report of the Tsetse Survey Reclamation Department consolidated up to and including 1949, p. 7. Printed by Govt. Printer, Dar es Salaam, Tanganyika.
3. The Relationship Between Economic Development and Rhodesian Sleeping Sickness in Tanganyika Territory
4. Tsetse-Flies and Development in Kenya Colony