Carl Burckhardt, Otto Greiner, Armin Koller, W. Ludwig Lehmann, Fritz Osswald … 09.03.1921 – 03.04.1921Location Kunsthaus. Full titleCarl Burckhardt, Otto Greiner, Armin Koller, W. Ludwig Lehmann, Fritz Osswald, F. Josef Rederer, Jakob Ritzmann Further information exhibition catalog in the library exhibition catalog online exhibition catalog