Press release on the increase in wildlife in the Grand Canyon including mountain sheep, deer, and the Abert Squirrel.

Letter from Carl Hayden to W. W. Bass asking his opinion on the proposed boundaries of the National Park. GC National Park written on the letter in red pencil.

Letter from Carl Hayden to W. W. Bass asking his opinion on the proposed boundaries of the National Park. GC Natl Park written on the letter in blue pencil.

Letter from W. W. Bass to Carl Hayden stating his vehement opposition to the National Park bill. Bass's concerns include a monopoly by the Santa Fe Railway and a clash between the Native Americans and the Department of the Interior.

Letter from W. W. Bass to Carl Hayden written on Bass Camps and Trails stationary. Bass urges Hayden to consider the implications to his farming and mining rights if the bill is passed.

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.