Scope and Contents John Wesley Powell: Canyon Geologist, produced by the U.S. Department of the Interior's Geological Survey, charts one-armed veteran geologist John Wesley Powell's first expedition through the Grand Canyon. Explanatory narration, adventurous orchestral music and direct readings from Powell's diary aid diverse visuals featuring a mix of landscape photography, animation, and Powell's own drawings. As the film recounts Powell's struggles against both nature and the...