A Field Guide to Rocks and Minerals (Peterson Field Guides)

Rockhounding: A Beginner’s Guide to Rock Hunting Around Lake Michigan

Rockhounding Colorado: A Guide to the State's Best Rockhounding Sites (Rockhounding Series)

Gem Trails of Oregon

Utah's Greatest Wonders: A Photographic Journey of the Five National Parks

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

The Map That Changed the World: William Smith and the Birth of Modern Geology

Rockhounding Montana: A Guide to 100 of Montana's Best Rockhounding Sites (Rockhounding Series)

Basin and Range (Annals of the Former World, 1)

National Audubon Society Field Guide to North American Fossils