Afton (aka Pentagonal Knife)

References

Bell, Robert and Roland Hall
1953 Selected Projectile Point Types of the United States. Bulletin, Oklahoma Anthropological Society, Vol 1.

Chapman, Carl
1975 Appendix II: Selected Types of Projectile Points and Knives from Early Periods In Missouri. In: The Archaeology of Missouri. University of Missouri Press, Columbia, MO.

Perino, Gregory
1985 Selected Preforms, Points, and Knives of the North American Native Americans, Vol 1. Points and Barbes, Idabel, OK