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- All Subjects: Eakin, John Ross, 1879-1946
- All Subjects: Havasupai Tribe of the Havasupai Reservation, Arizona
- All Subjects: Automobile travel
- All Subjects: Map
- All Subjects: Smith, George Otis, 1871-1944
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
Detailed map of Granite Gorge section of the Grand Canyon from the pamphlet titled, "Titan of Chasms: Grand Canyon of Arizona."
Press release comparing visitor attendance to the park by year. A 26 percent increase from 1923 to 1924 is noted.
Travel statistics for Grand Canyon National Park.
Letter from Alexander Vogelsang to Homer P. Snyder regarding land allocation for the Havasupai Tribe.
Letter from C. H. Gensler, Havasupai Agency to Carl Hayden regarding boundary lines.
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography.
Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.
Letter from Carl Hayden to George Otis Smith asking his advice regarding the mining of asbestos deposits in the Grand Canyon.
Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.