A large-format artist's book on Roth's iconic chocolate and sugar installation, with archival materials selected by Peter Fischli Since 1980, a small room in Basel has housed one of the most important works by Dieter Roth (1930-98): the installation Selbstturm; L wenturm (1969/70-98). The installation consists of two towers--one made of chocolate busts, the other of sugar cast figures stacked on glass plates--reaching...