Review of: "Hidden Thunder: Rock Art of the Upper Midwest, by Geri Schrab and Robert F. Boszhardt
Copyright © 2017 David W. Benn. This article is posted here for personal use, not for redistribution.
Benn, David W. "Hidden Thunder: Rock Art of the Upper Midwest." The Annals of Iowa 76 (2017), 337-338.
Available at: http://dx.doi.org/10.17077/0003-4827.12405