Letter from L. S. Williams to Carl Hayden stating there should be no objection to Saginaw and Manistee Lumber Company having their timber contract extended as it is greatly favored.

Letter from L. S. Williams to Carl Hayden suggesting a boundary amendment to the national park bill.

Letter from L. S. Williams to Carl Hayden about visiting Mr. Buggeln to discuss proposed park boundary changes.

Panorama view of Arcosanti site showing buildings and construction

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

Photograph of a poster promoting Silt Pile No. 7 workshop offered through Arizona State University College of Architecture at Cosanti in Paradise Valley, Arizona

Photograph of Cat-Cast House under construction (1960s) at Cosanti in Paradise Valley, Arizona

Photograph of Foundry Apse under construction (1960s) at Cosanti in Paradise Valley, Arizona

Photograph showing silt-cast wall panel at the south end of Cat-Cast House at Cosanti in Paradise Valley, Arizona

Photograph showing Paolo Soleri working on construction (1960s) of Foundry Apse at Cosanti in Paradise Valley, Arizona