“Menace at 1,000 Degrees!” starring Superman. Du-Vor tells a fellow teacher the story of how two space explorers came to be stranded on ancient Krypton and began the Kryptonian race.

1. "Menace at 1000 Degrees!" written by Denny O'Neil, penciled by Curt Swan and inked by Murphy Anderson. Reprinted in DC Comics Classics Library: Superman - Kryptonite Nevermore! #1.
2. "A Name is Born!" A "The Fabulous World of Krypton" story written by Cary Bates, penciled and inked by Gray Morrow. Reprinted in The Best of DC #40 & Superman: World of Krypton TPB.