Wilhelm Pfeffer als Professor in Tübingen. Carte de visite, <a href="https://en.wikipedia.org/wiki/Albumen_print" class="extiw" title="en:Albumen print">albumen print</a><div style="display: none;">medium QS:P186,Q580807</div>.
<bdi><a href="https://www.wikidata.org/wiki/Q2573309" class="extiw" title="d:Q2573309"><span title="German photographer (1834-1884)">Wilhelm Hornung</span></a>
</bdi>
between 1878 and 1883 <div style="display: none;">date QS:P,+1850-00-00T00:00:00Z/7,P1319,+1878-00-00T00:00:00Z/9,P1326,+1883-00-00T00:00:00Z/9</div>
Self-scanned