From Ohio History Central
This is a selection of the long, stemmed spear points made by Adena people.
The spear points of the Adena culture typically are long, leaf-shaped points with a rounded stem (sometimes called "beavertail points"). Adena points with narrow leaf-shaped blades may be older than larger Adena points with wider leaf-shaped blades and straighter stems that are known as Robbins points. The stem would have allowed the points to be inserted into a bone or wooden socket to attach it to a spear shaft. Adena points also could have been fastened to a short handle to serve as a knife.
- Justice, Noel and Suzanne K. Kudlaty. Field Guide to Projectile Points of the Midwest, Indianapolis, Indiana University Press, 2001.
- Lepper, Bradley T. Ohio Archaeology: An Illustrated Chronicle of Ohio's Ancient American Indian Cultures. Wilmington, Ohio, Orange Frazer Press, 2005.
- Otto, Martha P. and Brian G. Redmond. Transitions: Archaic and Early Woodland Research in the Ohio Country. Athens: Ohio University Press, 2008.