- Michigan Snakes: A Field Guide and Pocket Reference (E2000)
- Michigan Frogs, Toads, and Salamanders: A Field Guide and Pocket Reference (Extension Bulletin)
- The Michigan Roadside Naturalist
- Ancient Life of the Great Lakes Basin: Precambrian to Pleistocene (Great Lakes Environment)
- Fossil Snakes of North America: Origin, Evolution, Distribution, Paleoecology (Life of the Past)