<a href="https://fr.wikipedia.org/wiki/%C3%89douard_Otlet" class="extiw" title="fr:Édouard Otlet">Édouard Otlet</a> en 1887. Il a reçu l'ordre de Léopold.
<bdi><a href="//commons.wikimedia.org/wiki/Category:19th-century_unidentified_photographers" title="Category:19th-century unidentified photographers">Unidentified photographer</a>
</bdi>
<a href="//commons.wikimedia.org/wiki/File:%C3%89douard_Otlet_en_1887.jpg" title="File:Édouard Otlet en 1887.jpg">File:Édouard Otlet en 1887.jpg</a>