Raising funds for my fourth expedition proved to be very difficult.

South Africa had a long record of studies in prehistory, going back to the end of the last century.

Most Kikuyu marriages were arranged on the basis of what is described by anthropologists as the bride price.

Colonial governors and senior civil servants are not easy people to argue with, and I was not popular because of my criticism of the colonial service in Kenya.

The trip I made to Angola to study the prehistoric contents of the gravel beds as a means of deciding the age of the deposits and their economic potential was the first time prehistory had ever been used for such a purpose.

Raising funds for my fourth expedition proved to be very difficult.

Stone tools are fossilized human behavior.