1. Native Americans as active and passive promoters of mast and fruit trees in the eastern USA
2. Adams, William R. 1949 Archaeological Notes on Posey County, Indiana. Indiana Historical Bureau, Indianapolis, Indiana.
3. Mortars, maize, and Central Plains tradition farmers
4. Black, Glenn A. 1967 Angel Site: An Archaeological, Historical, and Ethnological Study. Indiana Historical Society, Indianapolis, Indiana.
5. Boszhardt, Robert F. 2012 The Effigy Mound to Oneota Revolution in the Upper Mississippi River Valley. In The Oxford Handbook of North American Archaeology, edited by Timothy R. Pauketat, pp. 410–421. Oxford University Press, Oxford.