Discusses the life and work of John Wesley Powell, an American geologist and anthropologist who explored the Colorado and Green Rivers.
year: 2004
call number/section: 920, 92
subjects: powell, john wesley, 1834-1902, juvenile literature, explorers, west (u.s.), juvenile literature, soldiers, united states, scientists, geologists, colorado river (colo.-mexico), discovery and exploration, juvenile literature, west (u.s.), grand canyon (ariz.)