1. 1954 The Prehistory of East Africa, Pelican Book, A316 (Penguin Books).
2. 1953 Climatic Change, Ed. Harvard University Press, pp. 165–177.
3. 1926 Lehrbuch der Meteorologie, Leipzig (Tauchnitz).
4. 1953 Adam's Ancestors, 4th Edn., London (Methuen).
5. 1925 Nach. Gesell. Wiss., Göttingen, pp. 184–92.