How many movies have Leif Pederen and Victor J. Kemper collaborated on?

They have worked on 2 movies together! Their first movie together was The Magic Garden of Stanley Sweetheart (1970) while their highest rated movie together was Who Is Harry Kellerman and Why Is He Saying Those Terrible Things About Me? (1971). They have not worked together since Who Is Harry Kellerman and Why Is He Saying Those Terrible Things About Me? (1971).