Letter from Carl Hayden to Stephen T. Mather regarding certain amendments to the national park bill. Rights regarding the Havasupai Tribe are mentioned.

Letter from Carl Hayden to John H. Page asking his opinion on the proposed national park bill. W.R. Hearst's name and property rights are mentioned.

Letter from Carl Hayden to C. H. Gensler informing him of a trip to the Grand Canyon to discuss the Havasupai Tribe grazing lands.

Letter from Carl Hayden to C. H. Gensler informing him of the proposed Grand Canyon National Park bill.

Letter from Carl Hayden to W. W. Bass soliciting his opinion on the proposed national park bill.

Letter from Carl Hayden to W. W. Bass informing him of the favorable opinion towards a national park bill.

Speech by Carl T. Hayden offering a motion to authorize a road an trail construction program in Grand Canyon National Park "to make these natural wonders accessible to the American people." The speech appears in the Congressional Record, 68th Congress, First Session.

Letter from Carl Hayden to the Flagstaff Board of Trade concerning a resolution passed to change the Grand Canyon from a monument to a National Park. Hayden expresses interest in the idea while taking care to protect the water power and mineral resources that are derived from the canyon.

Letter from Carl Hayden to C. T. Woolfolk thanking him for his support on the proposed bill. Hayden writes that the bill will not be introduced into the current session of Congress as any new legislation would be impossible to pass, but he is optimistic over the bill's future.

Letter from Carl Hayden to Hugh E. Campbell with an enclosed outline map of the proposed boundaries of Grand Canyon National Park.