Letter from Stephen Mather, National Park Service to Carl Hayden on payment to W. W. Bass.

Letter from Carl Hayden to Stephen Mather regarding the sale of Bass properties.

Photo of a man on a ladder and women in a window in a Romeo and Juliet type pose. Circa 1920.

Black and white print with high angle view of mules crossing South Kaibab Bridge.

Black and white print of people on South Kaibab Bridge.

Letter from Stephen T. Mather to Carl Hayden with markup of bill S 390 for the proposed National Park.

Letter from Stephen T. Mather to Carl Hayden regarding amendments to the national park bill including Mather's approval of the Secretary of the Interior granting railroads rights of way.

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

Letter of introduction for Dwight B. Heard on the arrival of National Park Service Director Stephen T. Mather to Phoenix. Mather's visit includes trips to Roosevelt Dam and Tumacácori.

Letter from Carl Hayden to Stephen Mather regarding Coconino County's willingness to dispose of Bright Angel Trail as long as the funds acquired would go to building a road between Old Trails Highway at Maine to the Grand Canyon.