Gem Trails of Northern California

National Audubon Society Field Guide to North American Fossils

Gemology Journey: Beginner's guide to Gemology

The Rockhounding Guide for Beginners: A Practical Guide to Finding, Identifying & Collecting Rocks, Minerals, Fossils & Gemstones | Essential Field Tips and Rock ID Basics for New Rockhounds

A Rockhound’s Guide to Oregon & Washington (Mountaineers)

Rocks & Minerals of Wisconsin, Illinois & Iowa: A Field Guide to the Badger, Prairie & Hawkeye States (Rocks & Minerals Identification Guides)

Rockhounding Colorado (Rockhounding Series)

Minnesota Rocks & Minerals: A Field Guide to the Land of 10,000 Lakes (Rocks & Minerals Identification Guides)

Agate Hunting on the Oregon Coast: A Guide to the 40 Best Agate Hunting Sites

Gold Panning the Pacific Northwest