Superman's Pal, Jimmy Olsen (vol 1) #50 GD

The Lord of Olsen Castle! (Jimmy Olsen, Superman, Lois Lane, Bizarro, Supergirl, Krypto / written by Jerry Siegel) Jimmy inherits a castle if he meet three challenges. Bizarro(!), Supergirl, and Krypto help Jimmy, without his knowledge. What will he do if he gets the castle? Get a Grip on your Gripes! (public service message / written by Jack Schiff) The Weirdest Asteroid in Space! (Jimmy Olsen, Superman / written by Otto Binder) Jimmy and Clark Kent find a living asteroid! How can Superman rescue Jimmy without giving away his secret identity? The Super-Life of Jimmy Olsen! (Jimmy Olsen, Superman, Professor Potter, Perry White, Lois Lane, Lucy Lane) Professor Potter tinkers with one of Lex's inventions which switches powers. For his birthday, Jimmy was supposed to get some of Superman's powers temporarily, but he got them all! Plus the machine breaks! Can someone fix the machine to get Superman's powers back?