Installation of walls and objects documenting artworks that incorporate literal space, including works by Helena Almeida, Marcel Duchamp, Joseph Kosuth, Bruce Nauman, Liliana Porter and Robert Smithson. (Thanks to Stephen Sullivan.)

This picture: Unmade Histories (waiting): Marcel Duchamp, 1,200 Coalbags, 1938, 2005 (paper bags, cable, rubber stamp, ink pad, corridors)