How many movies have Emil Häkkänen and Yrjö Tuominen collaborated on?

They have worked on 6 movies together! Their first movie together was Helmikuun manifesti (1939) while their highest rated movie together was Seitsemän veljestä (1939). They have not worked together since Rantasuon raatajat (1942). They are most known for their drama films together.