Robert Smithson Quotes about Past

Robert Smithson, Jack D. Flam (1996). “Robert Smithson, the Collected Writings”, p.11, Univ of California Press
Robert Smithson, Jack D. Flam (1996). “Robert Smithson, the Collected Writings”, p.156, Univ of California Press
Robert Smithson, Jack D. Flam (1996). “Robert Smithson, the Collected Writings”, p.155, Univ of California Press