How many movies have Anna Hill Johnstone and Fred C. Caruso collaborated on?

They have worked on 3 movies together! Their first movie together was Who Is Harry Kellerman and Why Is He Saying Those Terrible Things About Me? (1971) while their highest rated movie together was The Godfather 1901–1959: The Complete Epic (1981). They have not worked together since The Godfather 1901–1959: The Complete Epic (1981). They are most known for their drama films together.