Grand Canyon Watch Tower

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• How Old Is the Grand Canyon?
• Grand Canyon Quiz
• Grand Canyon
• Arizona
• The National Park System

Carol M. Highsmith, a distinguished and widely published American photographer, began donating her work to the Library of Congress in 1992. The Carol M. Highsmith archive at the Library of Congress includes photos from each of the United States and is expected to eventually contain 100,000 photos. Professionally printed and framed prints of these photos are available at PhotographsAmerica.com.