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Information about the artist Kees Snikkers (Wikipedia):
Dissatisfied with the policy pursued by De Ploeg, particularly in the area of exhibitions, fifteen artists left the members' meeting held in September 1980. Eddy Roos, Harm van Weerden, Martin den Hollander, Maria Klinkenberg, Kees Snikkers, Geert Meyer and a number of others gathered in café Radehoek in Groningen to discuss a solution. In January 1981 they founded the Groninger Kunstenaars Kollektief. The aim was "To form an organisation that confronts the public with expressions of professionally working artists and the interests of mutual contacts between artists; the association tries to achieve the goal by organising exhibitions, performances, installations, projects and art manifestations in general and tries to contribute in every way to a lively art climate." Snikkers became the first chairman.