Pewe, T.L., 1976, Introduction, in Pewe, T.L., and Updike, R.G., San Francisco Peaks: A Guidebook to the Geology, Second edition, prepared for American Quaternary Association, 4th biennial meeting, Tempe, Arizona, October 7-11, 1976, San Francisco Field Trip: Flagstaff, Museum of Northern Arizona, p. 1-15.
