Twenty-Six years of periodic reconnaissance along the Missouri River bluffs in western Missouri have revealed numerous archaeological sites on which repeated finds of long well-made blades, lanceolate in form, have occurred. These typical blades are not found in the artifact inventories of the reported manifestations of the region, but do seem to bear striking similarities to artifacts of the lithic cultures of the Great Plains. Brief mention of this complex has appeared (Shippee, 1940, p. 12; Wedel, 1943, p. 102) but it has not been fully characterized. Data now available will be presented here; they are tentative until supplemented by excavation.

The four sites which will be described are located in Clay County, Missouri, within a few miles of Kansas City (Fig. 4), in which area the Kansas River joins the Missouri. The prairies of eastern Kansas are relatively close by. The topographical locations and artifact inventories of these sites are practically identical.