How many movies have Harry Rowohlt and Maya Gräfin Rothkirch collaborated on?

They have worked on 5 movies together! Their first movie together was The Little Polar Bear (2001) while their highest rated movie together was The Little Polar Bear: The Dream of Flying (2003). They have not worked together since The Little Polar Bear: A Visitor from the South Pole (2004). They are most known for their family films together.