Allegheny Observatory director Samuel Pierpont Langley, accompanied by Keeler and others, went on a scientific expedition to the summit of Mount Whitney
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Allegheny Observatory director Samuel Pierpont Langley, accompanied by Keeler and others, went on a scientific expedition to the summit of Mount Whitney
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-23 from Wikipedia. The archived copy is preserved so this citation survives link rot.