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ContributorsHamilton, Ed (Author)
DescriptionGrand Canyon Village to Rowe's Well Road. Circa 1935.
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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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ContributorsZachau, Bernie (Author)
Created1917-02-17
Description

Letter from Bernie Zachau to Carl Hayden regarding water power 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.