How many movies have Bud Abbott and Charles Van Enger collaborated on?

They have worked on 12 movies together! Their first movie together was Who Done It? (1942) while their highest rated movie together was Bud Abbott and Lou Costello Meet Frankenstein (1948). They have not worked together since Abbott and Costello Meet the Killer, Boris Karloff (1949). They are most known for their comedy films together.