| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Smithsonian Guides to Natural America: Southern New England: Massachusetts, Connecticut, Rhode Island | 978-0-679-76475-5 (0-679-76475-5) | 1996 | Robert Finch · Bob Finch |
| The Smithsonian Guides to Natural America: The Mid-Atlantic States: The Mid-Atlantic States: Pennsylvania, New York, New Jersey | 978-0-679-76478-6 (0-679-76478-X) | 1996 | Eugene Walter |