Geological Society of America
Hart and Hind Publishing Company
Idaho Geological Survey
Lewis and Clark Trail Heritage Foundation, Inc.
Mountain Press Publishing Company
Oregon-California Trails Association: Overland Journal
Rocky Mountain Association of Geologists
Rutgers University Press
University of Maine Press
University of Nebraska Press
University of New Mexico Press
University of Tennessee Press
University of Utah Press
University of Washington Press
University Press of Colorado
Washington State University Press
Hart and Hind Publishing Company
Idaho Geological Survey
Lewis and Clark Trail Heritage Foundation, Inc.
Mountain Press Publishing Company
Oregon-California Trails Association: Overland Journal
Rocky Mountain Association of Geologists
Rutgers University Press
University of Maine Press
University of Nebraska Press
University of New Mexico Press
University of Tennessee Press
University of Utah Press
University of Washington Press
University Press of Colorado
Washington State University Press