How many movies have Arthur P. Jacobs and Natalie Trundy collaborated on?

They have worked on 5 movies together! Their first movie together was Beneath the Planet of the Apes (1970) while their highest rated movie together was Escape from the Planet of the Apes (1971). They have not worked together since Huckleberry Finn (1974). They are most known for their science fiction films together.