Becker G F (1888) Geology of the Quicksilver Deposits of the Pacific Slope. Chapter 11. Descriptive geology of the Steamboat Springs district, Monographs of the United States Geological Survey 13, 331-353
to
Hunt S (1888) The classification and nomenclature of metalline minerals. Proceedings of the American Philosophical Society 25, 170-180
Becker G F (1888) Geology of the Quicksilver Deposits of the Pacific Slope. Chapter 11. Descriptive geology of the Steamboat Springs district, Monographs of the United States Geological Survey 13, 331-353