My Greatest Adventure #18

A geometric, crystalline monster radiates an eerie glow as a desperate rifleman fires point-blank at it — only to watch his bullets prove useless — while a panicked elephant flees in the background on this striking 1957 DC cover penciled and inked by Jack Kirby. The cover teases the story "I Tracked the Nuclear Creature," and that speech bubble says it all: the thing destroys everything in its path with radiation, and nothing can stop it. My Greatest Adventure #18 captures the era's fascination with atomic-age terror in one unforgettable ten-cent package.