Matching Items (4)
Filtering by

Clear all filters

41240-Thumbnail Image.png
ContributorsSmith, George Otis (Author)
Created1918-04-23
Description

Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.

41242-Thumbnail Image.png
ContributorsSmith, George Otis (Author)
Created1918-05-01
Description

Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.

41255-Thumbnail Image.png
ContributorsGraves, Henry S. (Author)
Created1918-07-29
Description

Letter from Henry Graves to Carl T. Hayden regarding the land ownership and grazing rights of the Havasupai.

41508-Thumbnail Image.png
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.