1. Anderson, R.C. 1972. Prairie history, management, and restoration. In J. Zimmerman, ed. Proceedings of the Second Midwestern Prairie Conference. Madison, Wisconsin, 15–21.
2. Betz, R.F., and H.F. Lamp. 1989. Species composition of old settler silt-loam cemetery prairies. In T.B. Braggs, and J. Stubbendieck, eds. Proceedings of the Eleventh North American Prairie Conference, Prairie Pioneers: Ecology, History and Culture. Univer-sity of Nebraska, Lincoln, 33–39.
3. Betz, B.F., and H.P Lamp. 1992. Species composition of old settler savanna and sand prairie cemeteries in northern Illinois and northwestern Indiana. In D.A. Smith, and C.A. Jacobs, eds. Proceedings of the Twelfth North American Prairie Conference. University of Northern Iowa, Cedar Falls, 39–87.
4. Cooper, T.C., and N.S. Hunt. 1982. Iowa’s Natural Heritage. Iowa Natural Heritage Foundation and Iowa Academy of Science, Des Moines.
5. Ebinger, J.E. 1981. Vegetation of glacial drift hill prairies in east-central Illinois. Castanea 46: 115–121.