How many movies have Charles Lamont and Joan St. Oegger collaborated on?

They have worked on 12 movies together! Their first movie together was Ma and Pa Kettle Go to Town (1950) while their highest rated movie together was Bud Abbott and Lou Costello Meet the Invisible Man (1951). They have not worked together since Francis in the Haunted House (1956). They are most known for their comedy films together.