Jaap Blonk | Jaap Stam | Jaap Speyer | Jaap Wessels | Jaap van Reesema | Jaap Sjouwerman | Jaap Penraat | Jaap Eggermont | Jaap de Hoop Scheffer | Jaap Blokker | Jaap |
Some of the artists working in the studios were (are): Gerrit Jan van der Veen, Paul Grégoire, Jan Wolkers, Cees Kortlang, Jaap Wagemaker, John Grosman, Jet Schepp, Piet Esser, Fred Carasso en Bernard de Wolff.