Martin Luther King Jr.'s speech, titled "Religious Witness for Human Dignity," at Arizona State University's Goodwin Stadium. The recording includes a brief talk with Arizona NAACP supporters at the Tanner Chapel AME Church in Phoenix earlier the same day.

Photograph showing exterior view of Barrel Vault and Pumpkin Apse at Cosanti in Paradise Valley, Arizona

Photograph showing exterior view of Barrel Vault and Pumpkin Apse at Cosanti in Paradise Valley, Arizona

Photograph showing exterior view of Barrel Vault and Pumpkin Apse at Cosanti in Paradise Valley, Arizona

Photograph showing shell wall of Foundry Apse at Cosanti in Paradise Valley, Arizona

Two photographs of South Apse at Cosanti in Paradise Valley, Arizona

Two photographs of Foundry Apse at Cosanti in Paradise Valley, Arizona

Photograph of the tunnel opening to South Apse at Cosanti in Paradise Valley, Arizona

Photograph showing unidentified people and the tunnel opening to South Apse at Cosanti in Paradise Valley, Arizona