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A digital archive celebrating the Centennial of the Grand Canyon National Park. A collaborative project of the Arizona State University Library, Cline Library, Northern Arizona University, and the Grand Canyon National Park. Additional materials are available via the project website.

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Archean Ripple Marks in the Grand Canyon

ContributorsMaxon, John H. (Author) / Campbell, Ian (Author) / American Journal of Science (Publisher)
Created1934-10-01
DescriptionExcerpt on the Archean Ripple Mark in the Grand Canyon.
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Letter From P. J. Moran to Carl Hayden

ContributorsMoran, P. J. (Author)
Created1925-04-08
Description

Letter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail.

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Letter From P. J. Moran to Carl Hayden

ContributorsMoran, P. J. (Author)
Created1926-03-24
Description

Letter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail.