| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Animal Tracks of Minnesota & Wisconsin | 978-1-55105-250-2 | 2000 | Ian Sheldon · Tamara Eder |
| Animal Tracks of Texas | 978-1-55105-248-9 | 2000 | Ian Sheldon |
| Mammals of the Rocky Mountains | 978-1-55105-211-3 | 2000 | Chris Fisher · Don Pattie |
| Squirrels of the West | 978-1-55105-215-1 | 1999 | |