September 4 – November 20, 1964* Group Zero, initiated by Otto Piene and Heins Mack shows at the ICA. This is the first large Zero group exhibit in America. Artists include Armando, Pol Bury, Enrico Castellani, Piero Dorazio, Lucia Fontana, Hermann Goepfert, Gotthard Graubner, Hans Haacke, Oskar Holweck, Yves Klein, Yayoi Kusama, Lo Savio, Adolf Luther, Heinz Mack, Piero Manzoni, Almir Mavignier, Christian Megert, Henk Peeters, Otto Piene, Uli Pohl, Hans Salentin, Jacobus Schoonhoven, Jesus Raphael Soto, Ferdinand Spindel, Jean Tinguely, Gunther Uecker, Jef Verheyen, and Nanda Vigo. Catalog writing by Piene (curator), foreward by Samuel Adams Green. This is the first ICA exhibit to travel to Europe.

*October 30- December 11, 1964 cited in ICA 50th Anniversary Website