Action Comics #326

In "The Legion of Super-Creatures!", Superman faces an alien threat unlike any he’s encountered: giant, super-powered insects descending on Earth with no clear weakness. With his usual strength and speed failing against their overwhelming numbers, he must track their origin to a distant world before they conquer the planet. Written by Otto Binder and brought to life with Curt Swan’s dynamic art and George Klein’s sharp inks, this 1965 classic features a cover by Swan and Klein that captures the scale of the invasion.