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Letter From Robert Fechner, Emergency Conservation Work to Carl Hayden

ContributorsFechner, Robert (Author)
Created1936-02-26
Description

Letter from Robert Fechner to Carl Hayden on building a Union Chapel in the Grand Canyon.

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Letter From X. N. Steeves to Carl Hayden

ContributorsSteeves, X. N. (Author)
Created1924-03-20
Description

Letter from X. N. Steeves to Carl T. Hayden describing road conditions around the Grand Canyon National Park.

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Improving Visitor Communications in Grand Canyon National Park

ContributorsGreenberg, Laura B. (Author) / Underhill, A. Heaton (Author) / Cooperative National Park Resources Studies Unit, University of Arizona (Publisher)
Created1986-03
DescriptionCooperative National Park Resources Study Unit of Arizona, a special report, v no. 4, improving viistor communciation in Grand Canyon National Park
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Simulating the Effects of Glen Canyon Dam Releases on Grand Canyon River Trips

ContributorsUnderhill, A. Heaton (Author) / Borkan, Ronald E. (Author) / Battelle Memorial Institute. Technology Partnership Practice (Publisher)
Created1986-04
Description

Cooperative National Park Resources Studies Unit for University of Arizona, effects on Glen Canyon Dam releases on Grand Canyon River trips, a technical report, vol. no. 16.