<a href="//commons.wikimedia.org/wiki/Hugo_Erfurth" title="Hugo Erfurth">Hugo Erfurth</a> - Die Tänzerin <a href="//commons.wikimedia.org/wiki/Category:Clothilde_von_Derp" title="Category:Clothilde von Derp">Clotilde von Derp-Sacharoff</a>
<a href="//commons.wikimedia.org/wiki/Hugo_Erfurth" title="Hugo Erfurth">Hugo Erfurth</a> (1874-1948)
1928
<a rel="nofollow" class="external text" href="https://artblart.com/tag/elsa-von-carlberg/">Der künstlerische Tanz Unserer Zeit</a>, 1928 [The Artistic Dance of Our Time] p. 23