Superboy #128

Two green-skinned villains — the Kryptonite Kid and the Knave from Krypton — gloat as one of them aims a device that projects Superboy and Krypto the Superdog into the eerie, swirling dimension of the Phantom Zone, and the cover's speech bubbles make the stakes unmistakably clear. Curt Swan's pencils and George Klein's inks give the scene a crisp urgency that was a hallmark of DC's Silver Age storytelling at its most inventive. This book-length tale, "The Twilight World of No Return!," written by Jerry Siegel and illustrated by George Papp, promises a full-issue adventure with the young Man of Steel facing one of his most daunting predicaments yet.