A N · W.A. · William A. · William N.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| National Audubon Society Field Guide to North American Wildflowers | 978-0-394-50432-2 | 1979 | Nancy C. Olmstead · Susan Rayfield · Carol Nehring |
| National Audubon Society Field Guide to North American Wildflowers: Eastern Region - Revised Edition | 978-0-375-40232-6 | 2001 | John W. Thieret · Nancy C. Olmstead |
| The Life of the Marsh | 978-0-07-046006-5 | 1966 | |
| The Life of the Marsh: The North American Wetlands | 978-0-07-046555-8 | 1967 | |
| Wetlands | 978-0-394-73147-6 | 1985 | |