<a href="https://de.wikipedia.org/wiki/Carl_Wilhelm_von_N%C3%A4geli" class="extiw" title="de:Carl Wilhelm von Nägeli">de:Carl Wilhelm von Nägeli</a> (1817-1891)
The original uploader was <a href="https://en.wikipedia.org/wiki/de:User:Sixat" class="extiw" title="w:de:User:Sixat">Sixat</a> at <a href="https://en.wikipedia.org/wiki/de:" class="extiw" title="w:de:">German Wikipedia</a>.
27 April 2004 (original upload date)
Transferred from <span class="plainlinks"><a class="external text" href="https://de.wikipedia.org">de.wikipedia</a></span> to Commons.