Report on the Geology of the Henry Mountains (Department of the Interior U. S. Geographical and Geological Survey of the Rocky Mountain Region)

Washington DC: Government Printing Office, 1880. Second edition. Hardcover. Very good. 170pp. Quarto [30 cm] in original black cloth with gilt spine title. Extremities a bit dinged. Backstrip gently sunned. Text block cracked here and there, but still very solid. With the 5 fold out plates at the rear (crisp and clean). Subjects include Pulpit Arch, Early History of the Colorado River, and The Intrusive Rocks of the Henry Mountains.