1965
<p>f.l.t.r.: Louis Kalff, Jean Leering, <span>Johnny Jacobs (seen from the back),</span> in the background Jan van Goethem, André Volten and Constant at the Evoluon park design exhibition at Van Abbe Museum <span>Eindhoven</span>.</p><p><strong>NB: We do not have a version fit for print of this image.</strong></p>