| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1974 | 978-0-914516-02-6 | Earl J Larrison | Washington wildflowers, including 1134 species of wildflowers most commonly found in the State of Washington and adjacent areas of Oregon, Idaho, and British Columbia, (The Trailside series) |
| 1993 | 978-0-914516-10-1 | William P. Leonard · Herbert A. Brown · Lawrence L. C. Jones · Kelly R. McAllistar · Robert M. Storm | Amphibians of Washington and Oregon |
| 1997 | 978-0-914516-11-8 | Sarah S. Cooke | A Field Guide to the Common Wetland Plants of Western Washington & Northwestern Oregon |
| 2002 | 978-0-914516-13-2 | Robert Michael Pyle | The Butterflies of Cascadia: A Field Guide to All the Species of Washington, Oregon, and Surrounding Territories |
| 2016 | 978-0-914516-16-3 | Lawrence L. C. Jones · William P. Leonard · Deanna H. Olson | Amphibians of the Pacific Northwest |