Mount St. Helens is a volcano in the Cascade Mountains in southwestern Washington. On 18 May 1980, Mount St. Helens erupted with a force exceeding 27,000 atomic bombs. The blast killed 57 people and devastated the surrounding area.
- Vancouver! Vancouver! This is it!
- Harris, Stephen L. (1988). "Mount St. Helens: A Living Fire Mountain". Fire Mountains of the West: The Cascade and Mono Lake Volcanoes (1st ed.). Missoula, Montana: Mountain Press Publishing Company. pp. 201–228. ISBN 0-87842-220-X.