Photo portrait of the opera singer Clementine von Schuch-Proska (1892)
Unknown author<span style="display: none;">Unknown author</span>
<a rel="nofollow" class="external free" href="http://www.deutschefotothek.de/documents/obj/90100821/df_pos-1999-e_0000001_004">http://www.deutschefotothek.de/documents/obj/90100821/df_pos-1999-e_0000001_004</a>