Centraal Museum, Anthon Beeke # ARMANDO # 1976, nm-
Galerie Stangl # HORST ANTES # 1965, nm
galerie Swart # BONIES/ DEKKERS/ STRUYCKEN # poster ,1967, nm
Rotterdam, Dibbets, Bogart ao # KIJK KOOP KUNST # 1967, mint-
Visible Language #WRITING AND THE CONCEPT OF LAW # 1980, nm++
Visible Language # DYNAMICS OF WRITING # 1980, nm+
Visible Language # Teaching and learning HANDWRITING # 1979, nm+
Visible Language # HOFFMANN, Autumn 1973 # 1973, nm
Visible Language # FUNCTIONS OF LITERACY # Summer 1986, nm+
Visible Language # CALLIGRAPHY # Winter 1983, nm++
Visible Language # GRAPHIC DESIGN/ COMPUTER GRAPHICS, Spring 1985, nm++
Visible Language # VISUAL POETRY # Autumn, 1993, mint-
GALERIE 20d # PIETER ENGELS #Vernissage invitation # 1966, nm++
de Zonnehof # DE PLOEGH # 1977, nm
Bonajo ao # PRESENT FOREVER # 55 contemporary dutch artists, 2012, nm
Fondation Gulbenkian # MIRÓ # 1974, nm-
Kunsthalle Zürich # G. TUZINA # 1990, nm+
Visibale Language # DIAGRAMS # Summer, 1992 # 1992, mint-
Visible Language # AUTUMN 1983 # 1983, mint-
MAX, June 1994 # KEITH HARING # 1994, vg++
