Matching Items (3)
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- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: Moran, P. J.
- Creators: American Journal of Science
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.
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.
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.