Portrait of German writer <a href="https://de.wikipedia.org/wiki/Charlotte_Stieglitz" class="extiw" title="de:Charlotte Stieglitz">de:Charlotte Stieglitz</a>
Unknown<span style="display: none;">Unknown </span>, Photographer: <a href="//commons.wikimedia.org/wiki/User:Mutter_Erde" title="User:Mutter Erde">Mutter Erde</a>
taken from Karl Voss: <i>Potsdam-Führer für Literaturfreunde</i>, arani (-Verlag), Berlin 1993