Season 1, Episode 4 Roll on, Columbia
First Aired: July 1, 2004
A history of hydroelectric power on the Columbia River includes the contributions of Woody Guthrie and his songs about the river's promise in light of the Depression.
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- Premiered: June 20, 2004
- Rating: TV-PG
- Premise: Individuals and communities dedicated to protecting wildlife and the environment are profiled. (more)