- Cover by Curt Swan and Stan Kaye.
- "The Secret Identity of Superman!" written by Jerry Siegel, penciled by Curt Swan and inked by Stan Kaye. (Superman, Lois Lane, Jimmy Olsen, Lucy Lane, Superman Robot, Green Kryptonite)
- "The Interplanetary Circus!" written by Robert Bernstein, penciled and inked by Al Plastino. (Superman, Lois Lane)
- "The Night of March 31st!" written by Jerry Siegel, penciled by Curt Swan and inked by Shelly Moldoff. (Superman, Lois, Jimmy, Supergirl, Krypto, Streaky, Lori Lemaris, Lana Lang, Lex Luthor, Brainiac, Bizarro, Bizarro Perry White, Mr. Mxy, red and green Kryptonite, Daily Planet: an "April Fool's Day" story in which readers enter a contest to find the most errors)
"Superman, unless you join our space carnival, I'll set half the world on fire!
"And I'll freeze the other half!"
Superman (thought): I must do as these creatures command. There's no way to fight them!