
Dan Graham: A performance of “Two Consciousness Projection(s),”
at the Nova Scotia College of Art and Design, Halifax, Canada, in 1972
http://www.nytimes.com/slideshow/2009/06/28/arts/20090628-KENN_5.html
http://www.nytimes.com/2009/06/28/arts/design/28kenn.html?_r=1