Superman #151

Few Silver Age covers capture a hero in genuine peril quite like this one — Superman strains against an enormous winged, fire-breathing dragon above a city skyline, and his own speech bubble admits the creature's teeth actually hurt him. The featured story promises "The Super-Creature from Krypton!," and Curt Swan and George Klein's cover art sells the threat convincingly, with the green beast dwarfing the Man of Steel as a sleek futuristic aircraft passes in the background. It's a lively 1962 package from DC, with interior work by Jerry Siegel and Al Plastino to back up that eye-catching premise.