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 wide as Niagara Falls and three times as high. Steamboat Rock high and a in area, now stands as an isolated rise, but for a time it created two cataract. When the falls passed north of Steamboat Rock, it found a granite base beneath the basal flows. Granite lacks the close vertical joints of basalt, was resisted the erosion from the cataract's plunge. It remains as hills on the broad floor of the Coulee. Some gravel-bar deposits are visible along the Route 155. They provide evidence of eddies in the lee of rock shoulders. Dry Falls is at the head