Letter from Carl Hayden to W. W. Bass asking his opinion on the proposed boundaries of the National Park. GC Natl Park written on the letter in blue pencil.

Letter from Carl Hayden to W. W. Bass asking his opinion on the proposed boundaries of the National Park. GC National Park written on the letter in red pencil.

Letter from Carl Hayden to Hugh E. Campbell with an enclosed outline map of the proposed boundaries of Grand Canyon National Park.

Photograph showing Paolo Soleri and four other people working on construction at Arcosanti

Photograph showing Paolo Soleri and another person working on construction at Cube City at Construction Camp, Arcosanti

Photograph showing Paolo Soleri and four other people working on construction at Arcosanti

Photograph showing one person working on construction at Arcosanti

Photograph showing Paolo Soleri and two other people working on construction at Arcosanti

Photograph showing Paolo Soleri and five other people working on construction at Arcosanti

Photograph showing Paolo Soleri and three other people working on construction at Arcosanti