Exhibition catalogue published in conjunction with show held October 23, 2008 - January 11, 2009. Texts by Giuseppe Panza, Kerry Brougher, Evelyn C. Hankins. Documents works by Robert Barry, Larry Bell, Hanne Darboven, Jan Dibbets, Hamish Fulton, Douglas Huebler, Robert Irwin, On Kawara, Joseph Kosuth, Sol LeWitt, Richard Long, Bruce Nauman, Richard Nonas, Roman Opalka, Lawrence Weiner, Doug Wheeler acquired by the Hirshhorn Museum.