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.

Transcription of Martin Luther King, Jr.'s "Religious Witness for Human Dignity," which he delivered at Arizona State University's Goodwin Stadium.

Detailed map of Granite Gorge section of the Grand Canyon from the pamphlet titled, "Titan of Chasms: Grand Canyon of Arizona."

Amendments to the bill establishing the Grand Canyon a National Monument. Circa 1908.

Editoral attacking Senator Ralph Cameron for attempting to buy Bright Angel Trail.

Travel statistics for Grand Canyon National Park.

Rebuttal to the editoral published in the Coconino Sun attacking Ralph Cameron.

Letter from J. E. Gavin to Louis C. Cramton regarding the Bright Angel Trail controversy, including newspaper clipping.

Letter from Carl Hayden to Fred S. Breen regarding Yaki Point, the sale of Bright Angel Trail and the building of a road between Maine and the Grand Canyon.