Otto Hirschfeld
Unknown author<span style="display: none;">Unknown author</span>
1871/1872
Reinhard Lullies, Wolfgang Schiering, <i>Archäologenbildnisse</i>,  Mainz 1988, S. 88. <a rel="nofollow" class="external text" href="http://217.86.173.116/AB/JPG/Hirschfeld.jpg">Scan</a> von <a href="https://en.wikipedia.org/wiki/de:Benutzer:Steevie" class="extiw" title="w:de:Benutzer:Steevie">Steevie</a>