File:1975 Roland Helmer, coördinator van het Witte Theater.jpg
![File:1975 Roland Helmer, coördinator van het Witte Theater.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/2/21/1975_Roland_Helmer%2C_co%C3%B6rdinator_van_het_Witte_Theater.jpg/800px-1975_Roland_Helmer%2C_co%C3%B6rdinator_van_het_Witte_Theater.jpg?20240523234115)
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