Title: John Wesley Powell and the great surveys of the American West
Description: A biography of the geologist who first explored the Colorado River and the Grand Canyon.
Subjects: Discovery and exploration, Juvenile literature, Explorers, Biography, Geologists, Ontdekkingsreizen, Discoveries in geography
Places: Grand Canyon (Ariz.), Colorado River (Colo.-Mexico), West (U.S.), United States
People: John Wesley Powell (1834-1902)