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ContributorsPinchot, Gifford (Author)
Created1909-11-01
Description

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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ContributorsMathes, François E. (Author)
Created1926-05-15
Description

Letter from François E. Mathes to Carl T. Hayden about maps of 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.