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- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: Campbell, Ian
- Creators: Mathes, François E.
ContributorsMathes, François E. (Author)
Created1926-05-15
Description
Letter from François E. Mathes to Carl T. Hayden about maps of 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.