<a href="https://de.wikipedia.org/wiki/Friedrich_K%C3%BCppersbusch_(Journalist)" class="extiw" title="de:Friedrich Küppersbusch (Journalist)">Friedrich Küppersbusch</a>
<a href="//commons.wikimedia.org/wiki/User:Ferdinand_Krautkr%C3%A4mer" title="User:Ferdinand Krautkrämer">User:Ferdinand Krautkrämer</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>