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- All Subjects: Mather, Stephen Tyng, 1867-1930
- All Subjects: Gavin, John Edward, 1884-1959
- All Subjects: South Kaibab Bridge
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
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, National Park Service to Carl Hayden on payment to W. W. Bass.
Letter from Carl Hayden to Stephen Mather regarding Coconino County's willingness to dispose of Bright Angel Trail as long as the funds acquired would go to building a road between Old Trails Highway at Maine to the Grand Canyon.
Letter from Jesse L. Boyce to Jack regarding the storage of dynamite in Shoski Canyon.
Letter from the Director of the National Park Service, Stephen T. Mather, to Jesse L. Boyce informing him that immediate action is being taken to remove the TNT from the Grand Canyon.
Letter from Jesse L. Boyce to Jack in which he refers to W. W. Crosby as a "damn carpetbagger" and his frustration at Crosby making him out to be a "liar."
Letter from the Acting Director of the National Park to Carl Hayden assuring him that Superintendent Crosby had removed the dynamite nearby Grand Canyon Village and placed it in a safe location on the South Rim.
Letter of introduction for Dwight B. Heard on the arrival of National Park Service Director Stephen T. Mather to Phoenix. Mather's visit includes trips to Roosevelt Dam and Tumacácori.
Letter from Stephen T. Mather to Carl Hayden regarding amendments to the national park bill including Mather's approval of the Secretary of the Interior granting railroads rights of way.
Letter from Carl Hayden to Stephen T. Mather regarding certain amendments to the national park bill. Rights regarding the Havasupai Tribe are mentioned.