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- All Subjects: Geography
- All Subjects: Mather, Stephen Tyng, 1867-1931
- All Subjects: Henry S. McCluskey Photographs
- 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."
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography.
Letter from Carl Hayden to Stephen Mather requesting that congress pay W. W. Bass the sum of twenty-five thousand dollars for his properties.
Letter from Mrs. B. F. Gavin to Stephen Mather regarding the sale of Bass properties to the Santa Fe Railroad Company.
Letter from Stephen Mather to Carl Hayden regarding the sale of Bass properties to the Santa Fe Railroad Company.
Letter from Carl Hayden to Stephen Mather regarding the sale of Bass properties to the Santa Fe Railroad Company.
Map of proposed addition to Grand Canyon National Park Boundaries. Circa 1932.