Ruempol, A. P. E.; Museum Boymans-van Beuningen. Afdeling Kunstnijverheid en Vormgeving [Rotterdam]; Museum Boymans-van Beuningen. Department of Applied Arts and Design [Rotterdam]; van Dongen, A. G. A.; ter Molen, J. R.; Vreeken, Hubert; Crouwel, Wim; Koenig, R.
Bohnen, Uli; Ludwig Forum für Internationale Kunst, Aachen; USF Art Museum, University of South Florida, Tampa; Center for the Fine Arts, Miami; Samuel P. Harn Museum of Art, University of Florida, Gainesville; Becker, Wolfgang; Bohnen, Uli; Kotte, Wouter; Miller, Margaret A.