Issue: #377
Last valuation update: 2026-10-20
Cover by Curt Swan, inks Neal AdamsSuperman has escaped the ring of Green Kryptonite dust circling Earth, but can he survive... The Cage of Doom?Story by Otto Binder, art by Curt Swan/Jack AbelSuperboy has once again travelled to the 30th Century to meet with his friends the Legion of Super-Heroes, but can even their combined powers stop Urthlo?Story by Jerry Siegel, art by John Forte/Al Plastino...
Creators: Neal Adams, Jerry Siegel, Curt Swan, Jack Abel, Milt Snapinn, John Forte, Otto Binder, Al Plastino, Mort Weisinger
Characters: Superman, Lex Luthor, Bouncing Boy, Chameleon Boy, Cosmic Boy, Lightning Lad, Sun Boy, Saturn Girl, Invisible Kid, Shrinking Violet, Ulthro, Mon-El