How many movies have Johnny Haymer and Marvin J. Chomsky collaborated on?

They have worked on 2 movies together! Their first movie together was Mongo's Back in Town (1971) while their highest rated movie together was Attack on Terror: The FBI vs. the Ku Klux Klan (1975). They have not worked together since Attack on Terror: The FBI vs. the Ku Klux Klan (1975).