Filtering by
- All Subjects: Mining
- All Subjects: Flora and fauna
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
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Press release on the increase in wildlife in the Grand Canyon including mountain sheep, deer, and the Abert Squirrel.
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Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.
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Letter from Carl Hayden to George Otis Smith asking his advice regarding the mining of asbestos deposits in the Grand Canyon.
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Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.
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Letter from A. F. Potter to Carl T. Hayden describing John H. Page's request to build a railway for the Canyon Copper Company as "impractical."
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Letter from John H. Page regarding his right to build a railway between Grand Canyon Station and the Canyon Copper Company's mines and hotel.
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Letter from Gifford Pinchot to John H. Page denying his request to build a railway on the rim of the Grand Canyon for the Canyon Copper Company.
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Letter from John Page to Carl T. Hayden regarding a conversation conducted at Hotel Adams in Phoenix. Page states his concern over the national park bill in reference to his mining company.
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Letter from John Page to Carl Hayden concerning the future of property ownership within the proposed boundaries of the national park.