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- Creators: Matthes, F.
- Creators: McCarl, J. R.
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
ContributorsMcCarl, J. R. (Author)
Created1927-11-15
Description
Letter from J. R. McCarl to Secretary of the Interior on concessions and contracts in the park.
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.