Frederik Ernst Müller
Le contributeur wikicommons Vysotsky, d'après le <a rel="nofollow" class="external text" href="http://proxy.handle.net/10648/68bf0d52-1ad9-102f-85b3-003048976d84">GaHetNa (Nationaal Archief NL)</a>
<a href="//commons.wikimedia.org/wiki/File:Muller1943.jpg" title="File:Muller1943.jpg">File:Muller1943.jpg</a>