1. Birdsell, Joseph B.: The Problem of the Early Peopling of the Americas as viewed from Asia, In Papers on the Physical Anthropology of the American Indian, 1-68, 1949. The Viking Fund, Inc.
2. Dahlberg, Albert A.: The Dentition of the American Indian. In Papers on the Physical Anthropology of the American Indian, 138-176, 1949. The Viking Fund, Inc.
3. Further studies of tooth morphology