Modell des Luftschiffs <a href="https://de.wikipedia.org/wiki/Ville_de_Lucerne" class="extiw" title="de:Ville de Lucerne">Ville de Lucerne</a>.
<a href="//commons.wikimedia.org/wiki/User:Alp%C3%B6hi" title="User:Alpöhi">Alpöhi</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>