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- All Subjects: South Kaibab Trail (Ariz.)
- All Subjects: Flora and fauna
- All Subjects: Cataract Canyon (Wayne County-San Juan County, Utah)
- All Subjects: Chapels
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
Letter from Harold Greene to Carl Hayden regarding the proposed boundaries for the national park bill.
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography.
Amendments to the bill establishing the Grand Canyon a National Monument. Circa 1908.
Press release on the increase in wildlife in the Grand Canyon including mountain sheep, deer, and the Abert Squirrel.
Letter from Walter Mitchell to Carl Hayden on building a Union Chapel in the Grand Canyon.
Letter from Carl Hayden to Walter Mitchell on building a Union Chapel in the Grand Canyon.
Letter from Arno B. Cammerer to Carl Hayden on building a Union Chapel in the Grand Canyon.
Letter from Robert Fechner to Carl Hayden on building a Union Chapel in the Grand Canyon.
Letter from Carl Hayden to Robert Fechner on building a Union Chapel in the Grand Canyon.
Black and white, silver gelatin print with some silvering. Circa 1930.