How many movies have Karl Figdor and Mia May collaborated on?

They have worked on 7 movies together! Their first movie together was The Mistress of the World, Part I: The Girlfriend of the Yellow Man (1919) while their highest rated movie together was The Mistress of the World, Part VIII: The Revenge of Maud Fergusson (1920). They have not worked together since The Mistress of the World, Part VIII: The Revenge of Maud Fergusson (1920). They are most known for their adventure films together.