Letter from C. D. Dawson to Carl Hayden urging him to consider the rights of miners and farmers when drawing up the boundaries for the proposed park.

Letter from E. C. Finney to Carl Hayden regarding the cost of the Bright Angel Trail and an improved road between the town of Maine and the Grand Canyon.

Letter from X. N. Steeves to Carl T. Hayden describing road conditions around the Grand Canyon National Park.

Four letters of correspondence about the purchase of Bright Angel Trail between A. E. Demaray, Acting Director of the Grand Canyon National Park; E. C. Finney, Department of the Interior First Assistant Secretary; Carl T. Hayden, Representative (AZ); and Stephen T. Mather, Director of the National Park Service.

Photograph of swimming pool and concrete canopy, with view of Student Apse in background, at Cosanti in Paradise Valley, Arizona

Photograph of South Apse and ladder at Cosanti in Paradise Valley, Arizona

Photograph of the pathway between the Drafting Studio and South Apse at Cosanti in Paradise Valley, Arizona

Photograph showing view of South Apse entrance from Ceramics Studio at Cosanti in Paradise Valley, Arizona

Photograph of Michael McCleve, a sculptor, who worked for many years at Cosanti in Paradise Valley, Arizona

Photograph of Michael McCleve working on a sculpture entitled "Il Donnone," designed by Paolo Soleri, in South Apse at Cosanti in Paradise Valley, Arizona