Painting by Canadian artist Paul Kane of the 1847 eruption of Mount St. Helens
Mount St. Helens and Spirit Lake before the 1980 eruption
Frederick Weyerhaeuser (above), who built a lumber empire from a small sawmill on the banks of the Mississippi River, and James J. Hill (below), his next-door neighbor in St. Paul
Gifford Pinchot (above), at about the time he served as secretary for the National Forest Commission, and President Theodore Roosevelt (below)
The newly formed crater on top of the volcano in late March 1980
Geologist Dave Johnston collecting samples from the crater in April 1980
The Coldwater I station on the edge of a ridge eight miles from the volcano
Dave Johnston at Coldwater II on May 17
An ash-covered Mount St. Helens from Coldwater II on May 17
Mount St. Helens erupting on Sunday, May 18, 1980
The blast cloud on the east side of the volcano
Fawn Lake after the eruption, where John and Christy Killian were camping
A Weyerhaeuser company crummy submerged in a mudflow from the volcano
Rescuers looking at the remains of photographer Reid Blackburn in his ash-filled car at Coldwater I
Ralph Killian looking for his son at Fawn Lake the year after the eruption
The Green River valley looking west toward the area where Clyde Croft and Al Handy were camping on the morning of the eruption
Satellite photograph of Mount St. Helens taken in the spring of 2015
Mount St. Helens in 1982, with a new volcanic cone rising from its crater
