How many movies have Gerald Perry Finnerman and Herbert Hirschman collaborated on?

They have worked on 4 movies together! Their first movie together was They Call Me Mister Tibbs! (1970) while their highest rated movie together was The Forgotten City of the Planet of the Apes (1980). They have not worked together since Farewell to the Planet of the Apes (1980). They are most known for their science fiction films together.