interest is the Paleo-Indian period; however, he has worked in all facets of American archaeology. He has published over 250 papers and over 35 books in archaeology with his most recent being a two-volume, 800-page, 10,000-artifact book on the material culture of Virginia. In Virginia, he is considered an expert on prehistoric stone tools and rockart. The prehistoric Spout Run Observatory site was investigated by him which dated 10,470 YBP. He has served as president of the Archeological Society of Virginia (ASV) and Eastern States Archeological Federation (ESAF), and been past chairman of the Alexandria Archaeology Commission in Virginia. He is a charter member of the Registry of Professional Archaeologists (RPA). And, since he joined the Archeological Society of Virginia (ASV) in 1966, he is its senior member. And finally, his major publication is Bipoints Before Clovis.

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