Superman's Pal, Jimmy Olsen #12

A delightful puzzle anchors this 1956 DC gem: Superman stands in Perry White's office insisting he can't find a trace of Jimmy Olsen anywhere, while a ghostly, transparent Jimmy hovers right beside him, desperately gesturing that he's trapped in the 4th dimension where no one can see or hear him. Cover art by Curt Swan and Ray Burnley captures the comic irony perfectly — the world's greatest reporter is literally invisible to the Man of Steel standing inches away. It's a charming, imaginative premise that makes this issue of Superman's Pal, Jimmy Olsen a genuine treat from the Silver Age.