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1963
Fryxell, Roald, and Richard D. Daugherty. Late Glacial and Post Glacial Geological and Archaeological Chronology of the Columbia Plateau, Washington In Division of Archaeology and Geochronology Report of Investigations. Vol. 23. Washington State University Laboratory of Anthropology, 1963.
1959
Daugherty, Richard D.. Early Man in Washington In Division of Mines and Geology Information Circular. Vol. 32. Washington Department of Conservation, 1959.