After his studies in 1957 he became curator of the Princessehof Ceramics Museum in Leeuwarden. In 1963 he returned to Amsterdam to write his dissertation on Karel van Mander.
Following his academic pursuits in 1957, he assumed a leadership role at the Princessehof Ceramics Museum in Leeuwarden. Two years later, in 1963, he relocated to Amsterdam to conduct research and eventually produce a scholarly work on Karel van Mander.