Houghton Mifflin · Stackpole Books
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Peterson Field Guide to Western Trees | 978-0-395-46729-9 (0-395-46729-2) | 1992 | George A. Petrides · Roger Tory Peterson |
| Trees of the Pacific Northwest | 978-0-8117-3167-6 (0-8117-3167-7) | 2005 | George A. Petrides |