books.google.com - introduction by Jeff WallThe internationally renowned artist Dan Graham is widely acknowledged as one of the leading members of the 1960s conceptual art movement. However, his subsequent work in photography, performance, film, video, and the fusion of art and architecture, though well known in Europe...http://books.google.com/books/about/Two_way_Mirror_Power.html?id=69Q11VsUA_AC&utm_source=gb-gplus-shareTwo-way Mirror Power
