<a href="https://nl.wikipedia.org/wiki/Jan_Olieslagers" class="extiw" title="nl:Jan Olieslagers">Jan Olieslagers'</a> flying in his <a href="https://en.wikipedia.org/wiki/Bl%C3%A9riot_XI" class="extiw" title="en:Blériot XI">Blériot</a> above Rotterdam. Lieutenant Jan Olieslagers was a Flemish motorcycle and aviation pioneer who set world records with both types of machinery. He became a flying ace during World War I; he was credited with six confirmed victories.
<a href="//commons.wikimedia.org/wiki/User:Ad_Meskens" title="User:Ad Meskens">Ad Meskens(scan)</a>
<span class="int-own-work" lang="en">Own work</span>