Mac's Field Guide Good Garden Bugs of California (Mac's Guides (Charts))
Birds of Northern California (Lone Pine Field Guides)
Backyard Birds of California: How to Identify and Attract the Top 25 Birds
Birds of California Field Guide (Bird Identification Guides)
Birds of Northern California
Birds of Central & Northern California: A Guide to Common & Notable Species (Common and Notable Species)
National Audubon Society Field Guide to California
Mac's Field Guide to Pacific Northwest Trees (Mac's Guides) (Mac's Guides (Flash Cards))
Sibley Backyard Birding Flashcards: 100 Common Birds of Eastern and Western North America
Mac's Field Guide To Southern California Park and Garden Birds (Mac's Guides (Flash Cards))