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- All Subjects: Colorado River (Colo.-Mexico)
- All Subjects: Gavin, John Edward, 1884-1959
- All Subjects: Map
- 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 Jesse L. Boyce to Jack regarding the storage of dynamite in Shoski 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 from J. E. Gavin on behalf of Carl Hayden writing in regards to the insurance claims filed with the National Park.
Map of proposed addition to Grand Canyon National Park Boundaries. Circa 1932.
Black and white print with typescript annotation, "Upstream view of the canyon of Colorado River at the bridge site near Lees Ferry, Arizona." Handwritten annotation, "Exhibit I." Circa 1920-1929.
Black and white print with typescript annotation, "Close up view of Vulcan Throne, Grand Canyon, 89 miles below Bright Angel Creek." Handwritten annotation, "Exhibit IV." Circa 1920-1929.
