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- All Subjects: South Kaibab Trail (Ariz.)
- All Subjects: Flora and fauna
- All Subjects: Chapels
- All Subjects: Moran, Patrick Joseph, 1864-1936
- Member of: 100 Years of Grand: The Grand Canyon Centennial Project
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.
Letter from Carl T. Hayden to P. J. Moran concerning the alignment of the road to Bright Angel Trail.
Letter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail.
Letter from P. J. Moran to Carl T. Hayden inquiring when construction will begin on the approach road to Bright Angel Trail.