Don J. Easterbrook is Emeritus Professor of Geology at Western Washington University where he was department chairman for 12 years. He has B.S., M.S., and PhD degrees from the University of Washington and has published a dozen books, 180 papers in professional journals, and presented 30 research papers at international meetings in 15 countries. His research has included many years of work in the North Cascades, Puget Lowland, San Juan Islands, Columbia Plateau, Rocky Mts., New Zealand, Argentina and various other parts of the world. He has studied the geology of Mt. Baker for more than five decades and has published many professional papers on its eruptive and glacier history.

Although written primarily for non-geologists, it also contains much original geologic material of interest to geologists. The book includes 390 photos, maps, and diagrams.