George T. M. Shackelford is deputy director of the Kimbell Art Museum. Richard Shiff is Effie Marie Cain Regents Chair in Art at the University of Texas at Austin. Richard Thomson is Watson Gordon Professor of Fine Art, University of Edinburgh. Anthea Callen is professor emeritus of the Australian National University and professor emeritus of visual culture, University of Nottingham. Mary Dailey Desmarais is associate curator at the Museum of Fine Arts, Montreal.