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2. Ahearn, P. J. and Bailey, R. E. 1980. Pollen record from Chippewa Bog, Lapeer County, Michigan. Michigan Academician. 12(3): 297–308.
3. Bailey, R. E. 1972. Late-and postglacial environmental changes in Northwestern Indiana. Ph.D. thesis, Indiana Univ. (unpubl).
4. Bailey, R. E. 1979. Patterns of vegetational succession in the central Great Lakes region. Contrib. Pap., Paleoecol. Sec., ESA meeting, Stillwater, OK., August, 1979.
5. Benninghoff, W. S. 1962. Calculation of pollen and spore density in sediments by addition of exotic pollen in known quantities. (Abs) Pollen et Spores 4: 332–333.