Montagehal van de Koolhoven Vliegtuigenfabriek, 1939
Unknown author<span style="display: none;">Unknown author</span>
1939 picture (found online at <a rel="nofollow" class="external text" href="http://proxy.handle.net/10648/6ba74dcc-1ad9-102f-a76c-003048944028">Nationaal Archief</a>)