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Letter From Alf Dickinson to Carl Hayden

ContributorsDickinson, Alf (Author)
Created1926-04-27
Description

Letter from Alf Dickenson to Carl T. Hayden about securing mining permits within the 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