
Mag men het zien?
Washington D.C., Verenigde Staten
Het hoort bij de collectie, maar is momenteel niet tentoongesteld.
1970
First retrospective in The Hague
The Gemeentemuseum in The Hague presents his first retrospective exhibition.
1971
Everyone draws a line differently
Writing about the making of wall drawings, he observes that each person draws a line differently and each person understands words differently.
30 juni 1972 – 8 oktober 1972
Exhibition: Documenta 5
1972–1973
Museum shows in Bern and Oxford
In 1972–1973 his exhibitions are mounted at the Kunsthalle Bern and the Museum of Modern Art, Oxford.