Zea mays recovered from this site was directly dated.
This date has been reported in the Canadian Archaeological Radiocarbon Database (CARD) (Morlan and Betts 1999).
Morlan, R. E. and M. Betts 1999-2005 Canadian Archaeological Radiocarbon Database. http://www.canadianarchaeology.ca/. Canadian Museum of Civilization, Gatineau, Quebec.
Stoltman, J. B. and G. W. Christiansen 2000 The Late Woodland Stage in the Driftless Area of the Upper Mississippi Valley. In Late Woodland Societies: Tradition and Transformation across the Midcontinent, edited by T. E. Emerson, D. L. McElrath and A. C. Fortier, pp. 497-524. University of Nebraska Press, Lincoln.