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ContributorsSmith, George Otis (Author)
Created1918-05-01
Description

Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.

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ContributorsSmith, George Otis (Author)
Created1918-04-23
Description

Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.

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ContributorsGensler, C. H. (Author)
Created1918-07-30
Description

Letter from C. H. Gensler, Havasupai Agency to Carl Hayden regarding boundary lines.

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ContributorsGensler, C. H. (Author)
Created1917-02-12
Description

Letter from C. H. Gensler expressing concern on behalf of the Havasupai Tribe regarding the proposed park boundaries.

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ContributorsGensler, C. H. (Author)
Created1917-03-09
Description

Telegram from C. H. Gensler to Carl Hayden arranging a meeting in Hilltop, Arizona.

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ContributorsGensler, C. H. (Author)
Created1917-04-18
Description

Letter from C. H. Gensler to Carl Hayden asking for a meeting in regards to the Havasupai pasture land in light of the national park bill.

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ContributorsMaxon, John H. (Author) / Campbell, Ian (Author) / American Journal of Science (Publisher)
Created1934-10-01
DescriptionExcerpt on the Archean Ripple Mark 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.