Dr. Catherine M. Cameron is Professor Emerita in the Department of Anthropology at the University of Colorado. She works in the northern part of the American Southwest, focusing especially on the Chaco and post-Chaco eras (AD 900–1300). Her research interests include prehistoric demography, the evolution of complex societies, and processes of cultural transmission. She has worked in southeastern Utah at the Bluff Great House, a Chaco-era site, and in nearby Comb Wash. She also studies captives in prehistory, especially their role in cultural transmission.