ARTFORUM, September, 1969

Review Anti-Illusion: Procedures / Materials (artists discussed: Bollinger / Flannagan / Ferrer / Hesse / Barry Le Va / Morris / Nauman / Shapiro / Sonnier / Serra / Zorio)
Burnham, Jack  Real Time Systems [Barry / Burgy / Haacke / Huebler / "January 1969" / Kosuth / Levine / Oppenheim / Weiner]
Kaltenbach, Stephen  "Teach Art" work/advertisement 
Pincus-Witten, Robert  Richard Serra: Slow Information
Smithson, Robert  Incidents of Mirror-Travel in the Yucatan