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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ContributorsGrand Canyon National Park (Publisher)
Created1934-12
DescriptionPublication detailing the natural history of the Grand Canyon. Vol.9, No.9. Circa 1926-1934.
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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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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.

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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.