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ContributorsSmith, George Otis (Author)
Created1918-05-01
Description
Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.
ContributorsHayden, Carl T. (Author) / Smith, George Otih (Author)
Created1918-04-25
Description
Letter from Carl Hayden to George Otis Smith asking his advice regarding the mining of asbestos deposits in the Grand Canyon.
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.
Created1957 to 1970
Created1957 to 1970
Created1957 to 1970
Created1957 to 1968