Handing over of ANV-Visser Neerlandia prizes 1964. Left to right:Gerard Hengeveld, Hans Henkemans, Frans Koote
<a href="//commons.wikimedia.org/wiki/Category:Eric_Koch" title="Category:Eric Koch">Eric Koch</a> for <a href="//commons.wikimedia.org/wiki/Category:Anefo" title="Category:Anefo">Anefo</a>
<a rel="nofollow" class="external text" href="http://proxy.handle.net/10648/aa5a10ce-d0b4-102d-bcf8-003048976d84">GaHetNa (Nationaal Archief NL)</a> 916-0558