Geology of Devils Tower National Monument, Wyoming By Charles S. Robinson Books / Paperback Publisher: Department of the Interior, January 1980 Price $24.34 Free Shipping Send to a friend Used - Very Good Very Good condition. (Geology, Wyoming) A copy that may have a few cosmetic defects. May also contain a few markings such as an owner’s name, short gifter’s inscription or light stamp. $24.34 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.