Ausstellung Wilhelm Kohlhoff, Walther-Rathenau-Saal, Rathaus Wedding, Berlin, 23.10.-13.11.1973Wilhelm Kohlhoff, Peter Hopf, Rathaus Berlin-Wedding, Kunstamt Berlin-Wedding · First published 1973RomanceOpen the Tome
Bill Clutz, New York, Hans Goetsch, BerlinPeter Hopf, Kunstamt Wedding, Rathaus Berlin-Wedding · First published 1978Open the Tome
