He is an anthropologist specializing in archaeology and ethnohistory, with a primary research focus on the European colonial era in the Southeastern United States. He has served as anthropologist at the Fernbank Museum of Natural History in Atlanta and at the Pineland Site in Florida. He is the author of "The Struggle for the Georgia Coast: An Eighteenth-Century Spanish Retrospective on Guale and Mocama" (1995), "Timucuan Chiefdoms of Spanish Florida: Volume 1 & Volume 2," and many articles and book chapters.