(Note: Don’t forget about the Kickstarter! There’s only a week and a half to go and there’s still $750 needed to reach our goal!)
Eruption by Steve Olsen is an excellent book on the eruption which details how the eruption impacted everyone involved from the first rumblings on the mountain to the first tree planted in the aftermath.
The Seconds from Disaster episode on the eruption provides an excellent visual description of just how the eruption occurred. Each episode of Seconds from Disaster is a recommendation for any disaster you might be interested in because they not only give a detailed timeline for each disaster, but also give computerized simulations which show the disasters and their causes so you can see what happened. It’s great for those of us who like diagrams and pictures to help understand how disasters worked.
The Minute by Minute episode is also a great documentary to watch on the eruption.
Amateur video from a few years ago which briefly shows where Spirit Lake is in relation to the mountain. Note how when the mountain comes into view, you can see that the landslide would have slid directly down the slope toward the lake.
Another amateur video, this one showing the mountain as viewed from the Johnston Observatory. In this video, you can see just how close volcanologist David Johnston would have been standing to the eruption given where the observatory bearing his name and built on the spot where he died is located.
Here are some interviews with Harry R. Truman, owner and operator of the Mount St. Helens lodge, who died in the blast. Interview #1, Interview #2 (at the start), Interview #3 (in photos rather than video, from an Oregonian interview)