George H. Billingsley

Quest for the Pillar of Gold: The Mines & Miners of the Grand Canyon (Monograph)  George H. Billingsley Earle E. Spamer Dove Menkes Paperback. Grand Canyon Association, 1997-09-01 ISBN 9780938216568     Geology of Grand Canyon, Northern Arizona With Colorado River Guides: Lees Ferry to Pierce Ferry, Arizona (Field Trip Guidebook (American Geophysical Union), T115/315.)  D.C.) International Geological Congress 1989 Washington American Geophysical Union Donald Parker Elston George H. Billingsley Richard A. Young Plastic Comb. Amer Geophysical Union, 1989-06-01 ISBN 9780875906423