Raymond W. Murray, Man’s Unknown Ancestors (1943).
Early Man, a symposium edited by George Grant MacCurdy (1937).
The American Aborigines, a symposium edited by Diamond Jenness (1933).
George Grant MacCurdy, Human Origins (1924).
Miles C. Burkitt, The Old Stone Age (1933).
W. J. Sollas, Ancient Hunters and Their Modern Representatives (1924).
W. B. Wright, Tools and the Man (1939).
André Vayson de Pradenne, Prehistory (1940).
Edith Plant, Man’s Unwritten Past (1942).
Hallam L. Movius, Jr., Early Man and Pleistocene Stratigraphy in Southern and Eastern Asia (1944).