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- All Subjects: Automobile travel
- All Subjects: Gilbert and Myrtle Campbell Photographs
- All Subjects: Atchison, Topeka, and Santa Fe Railroad Company
- All Subjects: Coconino County (Ariz.)
- All Subjects: Chapels
- All Subjects: Mather, Stephen Tyng, 1867-1931
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
Travel statistics for Grand Canyon National Park.
Letter from Carl Hayden to Robert Fechner 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 Arno B. Cammerer 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 Walter Mitchell to Carl Hayden on building a Union Chapel in the Grand Canyon.
Letter from M. J. Riordan to Carl Hayden expressing his opposition to the federal government's takeover of Bright Angel Trail.
Letter from Carl Hayden to M. J. Riordan expressing his support for Coconino County in turning over the Bright Angel Trail to the federal government.
Letter from Horace M. Albright to Carl Hayden requesting a formal submission from Coconino County concerning the Bright Angel Trail.