作者介紹
作者介紹 Robert A. Birmingham is the author of Spirits of Earth: The Effigy Mound Landscape of Madison and the Four Lakes and the coauthor of Aztalan: Mysteries of an Ancient Indian Town. Now retired, he served as the state archaeologist of Wisconsin for many years and received the Increase Lapham Research Medal from the Wisconsin Archeological Society. Amy L. Rosebrough is a Wisconsin archaeologist and the coauthor of Water Panthers, Bears, and Thunderbirds: Exploring Wisconsin's Effigy Mounds.