1. "The Batman Nobody Remembered" (Superman, Batman and Robin) written by Bill Finger. Mostly set on a parallel world in which Bruce Wayne is Superman! (Batman does not exist in this world). Also in this world, the Joker is a TV comedian. But on our world, Batman is transported to that parallel world during a lightning storm. What happens when everyone there thinks he's a criminal? Reprinted in World's Finest Comics #188 and Showcase Presents: World's Finest #2.
2. "Little Pete" gag strip by Henry Boltinoff.
3. "The Weather Hunters" full text story.
4. "The Magician Boss of the Incas" (Green Arrow, Speedy) written by Ed Herron. Reprinted in Showcase Presents: Green Arrow #1.

Notes:

• Parallel Earth appearances by James Gordon, the Joker, Alfred Pennyworth, Robin, Bruce (Superman) Wayne, Lois (Vicki Vale) Lane.
• The Joker is a television actor named Freddy Forbes.
• There is no Batcave on the Parallel Earth.
• Bruce Wayne is Superman and his ward is Dick Greyson.
• Vicki Vale looks like Lois Lane and she works for View Magazine.
• Lois Lane has a Superman Signal Watch.
• Batman used two chemicals from his Utility Belt to make an explosive that would allow him to escape his jail cell.
• Superman is immune to Kryptonite, but he is vulnerable to Thulium.
• Earth-1 cameo appearances by Robin, James Gordon, Batwoman and Vicki Vale.