How many movies have Fred Gwynne and Yvonne De Carlo acted in together?

They have worked on 3 movies together! Their first movie together was Marineland Carnival: The Munsters Visit Marineland (1965) while their highest rated movie together was Munster, Go Home! (1966). They have not worked together since The Munsters' Revenge (1981). They are most known for their comedy films together.