Noord-Hoflandsche molen. Detail in the background of a picture of a railway accident near Voorschoten on september 9th, 1926.
unknown, published in the magazine 'Het Leven'.
Het Geheugen van Nederland: <a rel="nofollow" class="external free" href="https://resolver.kb.nl/resolve?urn=urn:gvn:SFA03:SFA022809678">https://resolver.kb.nl/resolve?urn=urn:gvn:SFA03:SFA022809678</a>