The volcanic history of the San Francisco Mountain, northern Arizona, in Karlstrom, T.N.V., Swann, G.A., and Eastwood, R.L., eds., Geology of northern Arizona with notes on archaeology and paleoclimate, Part 2 - Area studies and field...

Updike, R.G., 1974, The volcanic history of the San Francisco Mountain, northern Arizona, in Karlstrom, T.N.V., Swann, G.A., and Eastwood, R.L., eds., Geology of northern Arizona with notes on archaeology and paleoclimate, Part 2 - Area studies and field guides: Geological Society of America, Rocky Mountain Section, Annual Meeting, 27th, Flagstaff, Ariz., 1974, p. 547-556.