| Notes = * This issue is reprinted in the Supergirl: Way of the World trade paperback. * The tagline for this issue is, "Does Jor-El Hold the Key to Krypton's Past?" * Supergirl acquired the portal access device in Supergirl (Volume 5) #23. * Livewire appeared last in Flash (Volume 2) #237. * Includes flashbacks of when Kal-El was an infant. Issue reveals that Kara used to babysit Kal-El in the days leading up to Krypton's destruction. * Jor-El appears in flashback and as a holographic image in this issue. * Once again, this issue illustrates the recurring discrepency regarding the exact location of the Fortress of Solitude. Some issues indicate that it is located in Antarctica, others identify it's location near the North Pole.