Kiersch, G.A., 1952, Geology of the Tornado-Tam O'Shanter Peaks area, Dripping Spring Mountains, Arizona, in Shride, A.F., McKee, E.D., and Harshbarger, J.W., eds., Guidebook for field trip excursions in southern Arizona, Geological Society of America, Cordilleran Section Meeting, April 10-14, 1952, Tucson, Arizona: Arizona Geological Society, p. 86-90.