| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| National Audubon Society Regional Guide to the Mid-Atlantic States | 978-0-679-44682-8 | 1999 | Brian Cassie · Eric A. Oches · Harry Zirlin · Wendy B. Zomlefer |
| National Audubon Society Regional Guide to the Rocky Mountain States | 978-0-679-44681-1 | 1999 | Brian Cassie · John Grassy · Amy Leventer · Daniel Mathews · Wendy B. Zomlefer |
| National Audubon Society Regional Guide to the Southeastern States: Alabama, Arkansas, Georgia, Kentucky, Louisiana, Mississippi, North Carolina, South ... Field Guide to the Southeastern States) | 978-0-679-44683-5 | 1999 | Brian Cassie · Gil Nelson · Harry Zirlin · Eirc A. Oches · Wendy B. Zomlefer |
| National Audubon Society Regional Guide to the Southwestern States: Arizona, New Mexico, Nevada, Utah | 978-0-679-44680-4 | 1999 | Brianbon Society Cassie · Peter Friederici · Patrick Leary · Amy Leventer · Wendy B. Zomlefer |
D.K · J.D. · J.K · J Kahl · Jonathan D. · Jonathan D. W. Kahl