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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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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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ContributorsDarton, Nelson Horatio (Author) / Fred Harvey (Publisher)
Created1917
DescriptionBooklet describing a geological survey of the Grand Canyon. Four editions: 1917, 1929, 1936, 1950.