Correlation of Geologic Formations Between East-central Colorado, Central Wyoming and Southern Montana

The Geologic Story of the Rocky Mountain National Park, Colorado

Coal Fields of Grand Mesa and the West Elk Mountains, Colorado

The Geologic Story of the Rocky Mountain National Park, Colorado

The Geologic Story of the Rocky Mountain National Park, Colorado

Coal Resources of the Raton Coal Field, Colfax County, New Mexico: Issues 751-752

The Geologic Story of the Rocky Mountain National Park, Colorado

Geologic Reconnaissance of a Part of Western Arizona

Guidebook of the Western United States: The Overland route with a side trip to Yellowstone Park, Part 2

Guidebook of the Western United States: Part B. The Overland Route with a Side Trip to Yellowstone Park, Part 2