| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Newcomb's Wildflower Guide | 978-0-316-60442-0 (0-316-60442-9) | 1989 |
| Newcomb's Wildflower Guide: An Ingenious New Key System for Quick, Positive Field Identification of the Wildflowers, Flowering Shrubs and Vines of Northeastern and North-central North America | 978-0-316-60441-3 (0-316-60441-0) | 1977 |