1. (1976) The Art of Argument. New York: Emerson Books.
2. and (1946) The South African Fossil Ape-men. Pretoria: Transvaal Mus. Mem. 2.
3. (1950) External Morphology of the Primate Brain. Springfield, Illinois: C.C. Thomas.
4. Australopithecus africanus The Man-Ape of South Africa