The Prairie in Seed
Dave Williams
The Natural History of the Turtles of Iowa
Terry VanDeWalle & Neil P. Bernstein
Shrubs and Vines of Iowa
Peter J. van der Linden & Donald R. Farrar
Gardening with Native Plants in the Upper Midwest
Judy Nauseef
Wildflowers and Other Plants of Iowa Wetlands, 2nd edition
Sylvan T. Runkel & Dean M. Roosa
A Projectile Point Guide for the Upper Mississippi River Valley
Robert F Boszhardt
The Guide to Oklahoma Wildflowers
Patricia Folley
The Guide to Iowa's State Preserves
Ruth Herzberg & John A. Pearson
Mushrooms and Other Fungi of the Midcontinental United States
Donald M. Huffman, Lois H. Tiffany, George Knaphaus & Rosanne A. Healy
Field Guide to Wildflowers of Nebraska and the Great Plains
Jon Farrar