<a href="https://en.wikipedia.org/wiki/Archduke_Ludwig_Viktor_of_Austria" class="extiw" title="w:Archduke Ludwig Viktor of Austria">Archduke Ludwig Viktor of Austria</a> (1842-1919)
<bdi><a href="//commons.wikimedia.org/wiki/Category:19th-century_unidentified_photographers" title="Category:19th-century unidentified photographers">Unidentified photographer</a>
</bdi>
19<sup>th</sup> century <div style="display: none;">date QS:P571,+1850-00-00T00:00:00Z/7</div>
<a rel="nofollow" class="external autonumber" href="http://operetta-research-center.org/spielen-und-anspielen-gedanken-zu-den-operetten-libretti-von-johann-strauss/">[1]</a>