Margarete Schlegel Yelena Polevitskaya Hans Albers Rita Clermont Olga Engl Albert Patry Frida Richard Magnus Stifter Leopold von Ledebur Frederic Zelnik Bock & Bergfelder pp. 8 Hans-Michael Bock and Tim Bergfelder. Margarete Schlegel Yelena Polevitskaya Hans Albers Rita Clermont Olga Engl Albert Patry Frida Richard Magnus Stifter Leopold von Ledebur Frederic Zelnik ↑ Bock & Bergfelder pp. 8 Hans-Michael Bock and Tim Bergfelder.