Katalog 1975 : [Permanente Werkgruppen von: Urs Baenninger, Michael Buthe, Luciano Castelli, Johannes Geuer, Hel. M. Federle, Pieter Holstein, Herbert Lienhard, Urs Luethi, Markus Raetz, Dieter Roth, Hans Schaerer, Andre Thomkins, Jan Voss, Tom Wasmuth, David Weiss, Rolf Winnewisser]
