The centenary of Dada is almost upon us. If the movement had an identifiable beginning, it was certainly at the Cabaret Voltaire in Zurich in 1916, where Richard Huelsenbeck, Hugo Ball, Emmy Hennings, Tristan Tzara, Marcel Janco, Hans Arp and others gathered for events that have come down to us in detached bits of information and cloudy rumors more than anything else.