Carol Diaz-Granados, Ph.D., is a Research Associate in the Department of Anthropology, Washington University, St Louis, where she has taught since 1980. She earned her Ph.D. in Anthropology there in 1993. Her main research interests include American Indian art and iconography, rock art, body art/body modification across cultures, and urban archaeology. Jan F. Simek is Distinguished Professor of Science, University of Tennessee, Knoxville, and President Emeritus of the UT System. He earned his Ph.D. in 1984 at State University of New York at Binghamton. His research interests include Paleolithic archaeology, landscape archaeology, rock art studies and cave archaeology of the southeastern United States. George Sabo, III, Ph.D., earned his Ph.D. in anthropology from Michigan State University. He currently serves as a professor of anthropology and environmental dynamics at the University of Arkansas, Fayetteville, and he became director of the Arkansas Archeological Survey in 2013. His research interests are human/environment relationships, Southeastern Indian art and ritual, and American Indian interactions with European explorers and colonists. Mark J. Wagner, Ph.D. is Associate Professor in Anthropology and Director for the Center for Archaeological Investigations at Southern Illinois University in Carbondale. His research interests include landscape and rock art studies as well as the prehistory and history of Native Americans and Europeans in Illinois and the lower Ohio River Valley.