Bonewitz, R. L., 2008, Rock and Gem, Dorling Kindersley, NY, 360 pp.
Chesterman, C. W., 1979, National Audubon Society Field Guide to North American Rocks and Minerals, Knopf, New York, 850 pp.
Dixon, D., and R. L. Bernor, 1992, The Practical Geologist: The Introductory Guide to the Basics of Geology and to Collecting and Identifying Rocks, Simon & Schuster, New York, 160 pp.
Johnsen, O., 2002, Minerals of the World, Princeton University Press, Princeton, NJ, 439 pp.
Mitchell, J., 2008, The Rockhound’s Handbook, revised edition, Gem Guides Book Company, Baldwin Park, CA, 299 pp.
Pellant, C., 2002, Rocks & Minerals, Dorling Kindersley (Smithsonian Handbooks), New York, 256 pp.
Prinz, M., G. Harlow, & J. Peters, eds., 1978, Simon & Schuster’s Guide to Rocks & Minerals, Simon & Schuster, New York, 607 pp.
Vernon, R. H., 2000, Beneath Our Feet: The Rocks of Planet Earth, Cambridge University Press, Cambridge, UK, 216 pp.
Rocks of the Northwest Central
Graham, K. L., 1996, Rockhounding Wyoming, Falcon Press Publishing Company (A Falcon Guide), Helena, MT, 168 pp.
Hausel, W. D., 2009, Gems, Minerals & Rocks of Wyoming: A Guide for Rock Hounds, Prospectors & Collectors, W. Dan Hausel Geological Consulting LLC, Gilbert, AZ, 176 pp.
Hodges, M., and R. Feldman, 2006, Rockhounding Montana (2nd edition): A Guide to 91 of Montana's Best Rockhounding Sites, Globe Pequot Press (Falcon Guides Rockhounding Series), Guilford, CT, 232 pp.
Martin, J., and J. H. Monaco, 2007, Fee Mining and Rockhounding Adventures in the West, 2nd edition, Gem Guides Book Company, Baldwin Park, CA, 240 pp.
Romaine, G., 2010, Rockhounding Idaho: A Guide To 99 Of The State's Best Rockhounding Sites, Globe Pequot Press (Falcon Guides Rockhounding Series), Guilford, CT, 264 pp.
Romaine, G., 2014, Rocks, Gems, and Minerals of the Rocky Mountains, Globe Pequot Press (Falcon Pocket Guides), Guilford, CT, 176 pp.