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

Pamphlet containing descriptions of the Grand Canyon and Cataract Canon. Prices for stage fare, meals, and rooms are also included. Circa 1907.

Amendments to the bill establishing the Grand Canyon a National Monument. Circa 1908.

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

Letter from Harold Greene to Carl Hayden regarding the proposed boundaries for the national park bill.