James R. Mitchell Related books Gem Trails of Colorado Gem Guides Book Co • 1997 Gem Trails of New Mexico Gem Guides Book Co • 1996 Gem Trails of Southern California Gem Guides Book Co • 1996 Gem Trails of Texas Gem Guides Book Co • 1991 Gem Trails of Utah Gem Guides Book Co • 1996 The Rockhound's Handbook Gem Guides Book Co • 1981