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ContributorsFinney, Finney (Author)
Created1918-06-26
Description

Letter to Carl T. Hayden regarding a water-power bill in effect for the Grand Canyon.

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ContributorsWelch, Harry (Author)
Created1918-04-13
Description

Letter from Harry Welch to Carl Hayden enclosing W. W. Bass' letter of protest against the proposed national park bill.

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ContributorsHayden, Carl T. (Author) / Smith, George Otih (Author)
Created1918-04-25
Description

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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ContributorsMatthes, F. (Author) / Evans, R. T. (Author) / The Military engineer (Publisher)
Created1926-05
DescriptionGeological Survey of the Grand Canyon in published journal. Vol. XVIII, No. 99.
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ContributorsHamilton, Ed (Author)
DescriptionGrand Canyon Village to Rowe's Well Road. Circa 1935.