character: John Wesley Powell
topic: Impact of Powell's Expeditions on American Geography
grade: 9
subject: History
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character: John Wesley Powell
topic: The Colorado River Expedition of 1869
grade: 9
subject: History
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character: John Wesley Powell
topic: Geological Survey and Mapping of the American West
grade: 9
subject: History
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character: John Wesley Powell
topic: The Promotion of Federal Land Management Policies
grade: 9
subject: History
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