1. Abbott, R.T. 1974 American Seashells: The Marine Mollusks of the Atlantic and Pacific Coasts of North America. 2nd ed. Van Nostrand Reinhold Co., New York.
2. Alder, S.A. 1977 Archaeological Reconnai ssance and Test Excavation at the Jake White Bull Site, 39C06, Oahe Reservoir, South Dakota. Department of Anthropology and Archaeology, University of North Dakota, Grand Forks. Submitted to the U.S. Army Corps of Engineers, Omaha,
3. Ahler, S.A., and T. Weston 1981 Test Excavations at Lower Hidatsa Village (32ME10) Knife River Indian Villages National Historic Site. Department of Anthropology and Archaeology, University of North Dakota, Grand Forks. Submitted to the U.S. National Park Serv-ice, Denver.
4. Alex, R.A. 1981 Village Sites off the Missouri River. In: The Future ofSouth Dakota's Past, edited by L. Zimmerman and L.C. Stewart, pp. 39-45. Special Publications of the South Dakota Archaeological Society 2. University of South Dakota Archaeol-ogy Laboratory, Vermillion.
5. Alex, L.M. l989a Archaeological Testing and Analysis of Prehistoric Fortifications in Butte County, South Dakota. Project 46-88-30125B018. State Historical Preservation Center, Vermillion, South Dakota.