How many movies have Anna Hill Johnstone and Judith Lowry collaborated on?

They have worked on 3 movies together! Their first movie together was Ladybug Ladybug (1963) while their highest rated movie together was The Effect of Gamma Rays on Man-in-the-Moon Marigolds (1972). They have not worked together since The Effect of Gamma Rays on Man-in-the-Moon Marigolds (1972). They are most known for their drama films together.