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John Wesley Powell: A Gripping Photograph from 1869, Unveiling His Significant Discoveries
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John Wesley Powell: A Striking Snapshot from 1869, Capturing His Adventurous Spirit
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John Wesley Powell: An Inspiring Image from 1869, Reflecting His Legacy as a Pioneer of Western Exploration
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John Wesley Powell: A Captivating Photo from 1869, Showcasing His Explorations of the Colorado River
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John Wesley Powell: A Gripping Photograph from 1869, Unveiling His Contributions to Geology
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John Wesley Powell: A Striking Snapshot from 1869, Commemorating His Scientific Surveys
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John Wesley Powell: An Inspiring Image from 1869, Reflecting His Courageous River Expeditions
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John Wesley Powell: A Captivating Photo from 1869, Documenting His Exploration of the Grand Canyon