Rockhounding Oregon: A Guide to the State's Best Rockhounding Sites (Rockhounding Series)
Rocks & Minerals of Washington and Oregon: A Field Guide to the Evergreen and Beaver States (Rocks & Minerals Identification Guides)
Gem Trails of Washington
Rockhounding Washington: A Guide to the State's Best Sites (Rockhounding Series)
Gem Trails of Idaho & Western Montana
Roadside Geology of Oregon
Rockhounding Idaho: A Guide To 99 Of The State's Best Rockhounding Sites (Rockhounding Series)
Gem Trails of Arizona
Gem Trails of Northern California
Gem Trails of Nevada