Frey, Guido
[Writer of added text];
Hauser, Walter
[Writer of added text];
Hülsewig, Sarah
[Writer of added text];
Rasch, Manfred
[Writer of added text];
Schlautmann, Rainer
[Writer of added text];
Sachsse, Rolf
[Writer of added text];
Vogt, Christine
[Writer of added text]
;
LVR-Industriemuseum,
Ludwiggalerie Schloss Oberhausen