1. Anderson, T. W. 1974. The chestnut pollen decline as a time horizon in lake sediments in eastern North America. Canadian Journal of Earth Science 11: 678–685.
2. Bailey, R. E. 1972. Late-and postglacial environmental changes in Northwestern Indiana. Doctoral Dissertation, Indiana University, Bloomington, Indiana.
3. Bailey, R. E. 1979. Patterns of vegetational succession in the central Great Lakes region (Abstract). Bulletin of the Ecological Society of America 60(2): 101.
4. Baker, R. G. 1970. A radiocarbon-dated pollen chronology for Wisconsin: Disterhaft Farm Bog revisited. Geological Society of America, Annual Meeting Abstract 2: 488.
5. Baker, R. G. 1978. Pollen analyses of Farmdalian peats in southeastern Iowa (Abstract). American Quaternary Association, Abstracts of the Fifth Biennial Meeting, Sept. 2–4, 1978, University of Alberta, Edmonton, Alberta. p. 184.