- 2007. Spatial ecology and over–winter survival of neonate Eastern Massasauga rattlesnakes (Sistrurus catenatus catenatus) at Carlyle Lake. Co–investigated with S. J. Baker.
- 2007. Population size and genetics of the Blanding’s Turtle at Goose Lake State Natural Area Grundy County, Illinois – Year 1. Co–investigated with W. J. Banning.
- 1997. Reproductive ecology, home range, and dispersal of the River Cooter, Pseudemys concinna, from Illinois.
- 1993. Status of the River Cooter, Pseudemys concinna, in the Illinois backwaters of the Wabash and Ohio Rivers. Co–investigated with Dr. E. O. Moll.