Four Color #421

In "Colonists of Io," swashbuckling Captain Skip McKay leads a group of settlers to Jupiter’s moon Io, where they’re meant to establish a new colony under the watchful eye of Captain Strong and his cadets. As the mission begins, McKay’s bold leadership is tested when he uncovers uranium on the moon—setting off a chain of tensions that threaten to unravel the fragile order of the expedition. Written by Paul S. Newman and illustrated by Al McWilliams, this 1952 Dell Four Color tale captures the thrill of early spacefrontier stories, with dynamic art and a tense, character-driven setup. The cover by Al McWilliams perfectly frames the adventure’s bold, frontier spirit.