In 1652 they stayed a month with Abraham Cuyper in Cologne .
Afterwards Helmbreeker returned to Haarlem , while Dubois and the others travelled to Frankfurt , Heidelberg , Darmstadt , and Mannheim before returning to spend the winter with Abraham Cuyper .
In 1652 they stayed a month with Abraham Cuyper in Cologne , and afterwards Helmbreeker returned to Haarlem , while Dubois and the others travelled to Frankfurt , Heidelberg , Darmstadt , and Mannheim before returning to spend the winter with Cuyper .