Issue: #21
Last valuation update: 2026-03-20
Contains: The Legion of Super-Creatures (reprinted from Action Comics #326)The Leap Year Menace! (reprinted from Green Lantern #3)The Big House of Monsters (reprinted from Star Spangled War Stories #132)What Were the Dinosaurs? (a text story)The Marvel Family Reaches Eternity (reprinted from The Marvel Family #7)
Creators: Gaspar Saladino, John Workman, Gil Kane, George Klein, Curt Swan, Tatjana Wood, Joe Giella, Russ Heath, Pete Costanza, Joe Letterese, John Broome, Otto Binder, Ernie Chan, E. Nelson Bridwell, Robert Kanigher
Characters: Superman, Lois Lane, Hal Jordan, Billy Batson, Jimmy Olsen, Freddy Freeman, Perry White, Mary Marvel, The Wizard, Carol Ferris, Mrs. Cranston