| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Lewis Clark's Field Guide to Wild Flowers of Field and Slope in the Pacific Northwest | 978-0-295-96125-5 | 1976 | |
| Lewis Clark's Field Guide to Wild Flowers of Forest and Woodland in the Pacific Northwest | 978-0-295-96099-9 | 1976 | |
| Lewis Clark's Field Guide to Wildflowers of Marsh and Waterway in the Pacific Northwest | 978-0-295-96091-3 | 1984 | |
| Lewis Clark's Field Guide to Wild Flowers of the Mountains in the Pacific Northwest | 978-0-295-96098-2 | 1976 | |
| Lewis Clark's Field Guide to Wildflowers of the Sea Coast in the Pacific Northwest | 978-0-295-96092-0 | 1984 | |
| Wildflowers of the Arid Flatlands in the Pacific Northwest | 978-0-295-96093-7 | 1976 | |
| Wild Flowers of the Pacific Northwest: The Third Edition of a Timeless Classic | 978-1-55017-195-2 | 1998 | |
| Yosemite Trails | 978-0-931532-01-6 | 1995 | Virginia D. Clark |
J C · J. Clark · L. C. · L. Clark · L.J. · L.J. Clark · Lewis-C · Lewis Clark · Lewis J.
Harbour Publishing · University of Washington Press · Western Trails Publications