He received a PhD in Anthropology in 1973 from the University of Texas at Austin. His main research interests are Texas prehistory, American Southwest (Mimbres and Jornada Mogollon), and Lowland Maya lithic technology. He joined the Department of Sociology and Anthropology faculty in 1972 and retired in 2002. He was the first archaeologist on the TAMU faculty and introduced numerous courses. He initiated and directed the Cultural Resources Management program within the Anthropology Department from 1974 to 1979 while teaching full time. He directed the National Geographic Society/Earthwatch-funded NAN Ranch Project in New Mexico from 1978-1966. He also co-directed the National Geographic-NSF Hinds Cave Project from 1974-1977 in Val Verde County, Texas, and the NEH-funded Colha Project in Belize from 1979-1994. He has authored or co-authored over 300 publications, including Ancient Texans, Mimbres Archaeology at the NAN Ranch Ruin, Field Methods in Archaeology and Maya Stone Tools. He currently resides in San Antonio, Texas and continues to be actively in archaeology and writing.