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| 1969 | Amsterdam, The Netherlands, Stedelijk Museum, The Procession/The Artist’s Co-op (17.4.-1.6.1969) |
| 1971_72 | Stockholm, Sweden, Moderna Museet, Pyramid/A Work in Progress (6.11.1971-9.1.1972) |
| 1972 | Kassel, Germany, documenta 5, Ark, Pyramid (30.6.-8.10.1972) |
| 1973 | Lucerne, Switzerland, Museum of Art Lucerne, Ark, Pyramid, Easter. A visiting group show (25.3.-29.4.1973) |
| 1973 | Duisburg, Germany, Wilhelm-Lehmbruck-Museum, Ark, Pyramid - Christmas („Die Krippe“) (11.12.1973-3.2.1974) |