Before he was getting into trouble on the George Reeves TV show, before he starred in his own comic book series - even before he appeared in the comics - Jimmy Olsen made his debut as a character on the Superman radio show.  His first appearance came in the storyline we'll hear today - an adventure that pits Superman against a protection racket shaking down the candy shop owned by Jimmy's mom. These episodes originally aired between April 15 and April 26, 1940).