Wonder Woman #21

In "The Mystery of the Atom World," Wonder Woman ventures into a hidden microverse born from a newly tested atomic bomb, taking her to Paula's lab where she and her friend uncover a strange realm inside a uranium sample. There, protons take the form of warrior women ruled by the enigmatic Queen Atomia, while neutrons are enslaved robotic beings—revealing a universe far smaller than imagined, yet just as complex. Written by Charles Moulton and illustrated by H. G. Peter, with cover art by H. G. Peter, this 1947 issue blends science fiction and myth in a thrilling first chapter of a cosmic mystery.