[042-09]Check List of the Vascular Plants of Winnebago County, Illinois
Fuller, George D, Fell, Egbert W., Fell, George B. Check List of the Vascular Plants of Winnebago County, Illinois 042-09-print
[042-07]Ferns of Rock River Valley in Illinois
Fell, Egbert W. and Fell, George B. Ferns of Rock River Valley in Illinois 042-07-print
[047-06]Check List of Vascular Plants of Boone County, Illinois
Fell, Egbert W., Fuller, George D., and Fell, George B. Check List of Vascular Plants of Boone County, Illinois 047-06-print
[049-07]The Gravel-Hill Prairies of Rock River Valley in Illinois
Fell, Egbert W. and Fell, George B. The Gravel-Hill Prairies of Rock River Valley in Illinois 049-7-print
[050-12]The Ravine Flora of Winnebago County, Illinois
Fell, Egbert W. and Fell, George B. The Ravine Flora of Winnebago County, Illinois 050-12-print