Bradbury, J.P. and W.E. Dean, Editors, 1993, "Elk Lake, Minnesota:
Evidence for Rapid Climate Change in the north central United States",
GSA Special Paper 276, 336pp.
Dean, W.E., Bradbury, J.P., Anderson, R.Y., Bader, L.R., Dieterich-
Rurup, K., 1994. "A High-Resolution Record of Climatic Change in Elk
Lake, Minnesota for the Last 1500 Years". Open File Report 94-578,
U.S. Geological Survey, 127pp.
A.J. Smith, J.J. Donovan, E. Ito, and D.R. Engstrom, 1997,
Ground-water processes controlling a prairie lake's response to middle
Holocene drought. Geology, 25, 391-394.