Mountain Press Publishing Missoula Montana
David Alt
Dave Alt and Don Hyndman started the popular and long-lived Roadside Geology series in the 1970s, with the publication of Roadside Geology of Northern California in 1975. Dave Alt passed away in 2015, but his passion for teaching and his wry humor carry on in this revision.

   Northwest Exposures
   Glacial Lake Missoula
   Roadside Geology of Idaho