Hoogovenschaaktoernooi in Beverwijk. Scheltinga en Kottnauer
<a href="//commons.wikimedia.org/wiki/Category:Wim_van_Rossem" title="Category:Wim van Rossem">Wim van Rossem</a> for <a href="//commons.wikimedia.org/wiki/Category:Anefo" title="Category:Anefo">Anefo</a>
1962-01-11
<a rel="nofollow" class="external text" href="http://proxy.handle.net/10648/a9f3eca4-d0b4-102d-bcf8-003048976d84">GaHetNa  (Nationaal Archief NL)</a>  NL-HaNA 2.24.01.05 0 913-3914