- Pacific Intertidal Life: A Guide to Organisms of Rocky Reefs and Tide Pools of the Pacific Coast (Nature Study Guides)
- Pacific Coast Mammals: A Guide to Mammals of the Pacific Coast States, Their Tracks, Skulls, and Other Signs (Nature Study Guides)
- Mountain State Mammals: A Guide to Mammals of the Rocky Mountain Region (Nature Study Guides)
- Pacific Coast Fish: A Guide to Marine Fish of the Pacific Coast of North America (Nature Study Guides)
- Field Guide to Plant Galls of California and Other Western States