The Columbia River Collection role. The United States Department of the Interior hired him for one month to write songs about the Columbia River and the construction of the federal dams for the documentary's soundtrack. Guthrie toured the Columbia River and the Pacific Northwest. Guthrie said he "couldn't believe it, it's a paradise", which appeared to inspire him creatively. In one month Guthrie wrote 26 songs, including three of his most famous: "Roll On, Columbia, Roll On", "Pastures of Plenty", and "Grand Coulee Dam". The surviving songs were released as "Columbia River Songs". The film "Columbia" was not completed until 1949. Track Listing of
Grand Coulee Dam The dam's powerhouse began production around the time World War II began, and its electricity was vital to the war effort. The dam powered aluminum smelters in Longview and Vancouver, Washington, Boeing factories in Seattle and Vancouver, and Portland's shipyards. In 1943, its electricity was also used for plutonium production in Richland, Washington, at the Hanford Site, which was part of the top-secret Manhattan Project. The demand for power at that project was so great that in 1943, two generators originally intended for the Shasta Dam were installed at Grand Coulee to hurry the generator installation schedule. Water is pumped