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- All Subjects: Campbell, Gilbert Alan, 1906-1985
- All Subjects: Geography
- All Subjects: Tillotson, Miner Raymond, 1886-1955
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
Map of proposed addition to Grand Canyon National Park Boundaries. Circa 1932.
Letter from Arno B. Cammerer to Carl Hayden informing him that Superintendent Tillotson will submit a report on the conditions of the road between Grand Canyon Village and Rowe's Well.
Letter from Carl Hayden to Ed Hamilton informing him that Superintendent Tillotson will submit a report on the conditions of the road between Grand Canyon Village and Rowe's Well.
Letter from A. E. Demaray to Carl Hayden with Superintendent Tillotson's report on the road between Grand Canyon Village and Rowe's Well.
Letter from Ed Hamilton to Carl Hayden outlining his opposition to Superintendent Tillotson's report on the road between Grand Canyon Village and Rowe's Well.
Black and white print of people riding mules down a steep trail. Circa 1940-1949.
Black and white print overlooking the canyon with clouds below the canyon's highest elevations. Circa 1940-1949.