Letter from Alexander Vogelsang to Homer P. Snyder regarding land allocation for the Havasupai Tribe.
Amendments to the bill establishing the Grand Canyon a National Monument. Circa 1908.
Letter from C. H. Gensler, Havasupai Agency to Carl Hayden regarding boundary lines.
Letter from Carl T. Hayden to C. H. Gensler, Havasupai Indian Reservation, regarding Hualapai and Cataract Canyons geography.
Letter from W. W. Bass to Carl Hayden regarding the right to his property.
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 L. B. Williams to Carl Hayden regarding W. W. Bass' resistance to the park bill.
Letter from Carl Hayden to L. B. Williams concerning the proposed township in the Grand Canyon.