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 T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography.

Letter from George Otis Smith, U.S. Geological Survey to Carl Hayden regarding asbestos mining prospects in the Grand Canyon.

Letter from Carl Hayden to George Otis Smith asking his advice regarding the mining of asbestos deposits in the Grand Canyon.

Letter from George Otis Smith to Carl Hayden regarding mining rights in the Grand Canyon.

Letter from Carl Hayden to L. B. Williams concerning the proposed township in the Grand Canyon.

Letter from Carl Hayden to George W. P. Hunt outlining the proposed national park boundaries and the cost of a township if the state of Arizona decided to acquire one on the rim of the Grand Canyon.

Letter from John H. Page regarding his right to build a railway between Grand Canyon Station and the Canyon Copper Company's mines and hotel.

Letter from John H. Page to Carl T. Hayden regarding his company's rights to build a railway if they choose to.

Letter from John Page to Carl T. Hayden regarding a conversation conducted at Hotel Adams in Phoenix. Page states his concern over the national park bill in reference to his mining company.