- Script:
- ?
- Pencils:
- Curt Swan
- Inks:
- George Klein
- Letters:
- ?
- Editing:
- Mort Weisinger (original editor)
- Genre:
- superhero
- Characters:
- Superman; Xardo (villain); Red Kryptonite; Krypto (flashback); Jor-El (flashback); Lara (flashback); Superbaby (flashback)
- Reprints: show reprint note before migration
- Script:
- Otto Binder
- Pencils:
- Curt Swan
- Inks:
- George Klein
- Letters:
- ?
- Editing:
- Mort Weisinger (original editor)
- Genre:
- superhero
- Characters:
- Superman; green kryptonite (same chunk of rock as last time, now red kryptonite); Krypto (guest appearance); Vol-Don (guest appearance); Superman; Perry White; Jimmy Olsen; Lois Lane; gold kryptonite; Superboy (flashback); Super-Baby (flashback); Fortress of Solitude; Kandor; Supergirl robot; Superman robot
- Reprints: show reprint note before migration
Tales of Kryptonite No. 3
- Script:
- Leo Dorfman
- Pencils:
- Al Plastino
- Inks:
- Al Plastino
- Letters:
- ?
- Editing:
- Mort Weisinger (original editor)
- Genre:
- superhero
- Characters:
- Superman; Torr the Terrible (intro, villain); Rogg (intro, death); Vikk (intro, death); Perry White; Jimmy Olsen
- Reprints: show reprint note before migration
- Script:
- Gardner Fox
- Pencils:
- Sheldon Moldoff
- Inks:
- Joe Giella
- Letters:
- Gaspar Saladino
- Editing:
- Julius Schwartz (original editor)
- Genre:
- superhero
- Characters:
- Aunt Harriet
- Reprints: show reprint note before migration
Credits for script and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. Records show that Bob Kane was paid for the pencils, but scholars agree that pencils were actually by Moldoff.
- Script:
- Robert Bernstein ?
- Pencils:
- Al Plastino
- Inks:
- Al Plastino
- Letters:
- ?
- Editing:
- Mort Weisinger (original editor)
- Genre:
- superhero
- Characters:
- Chief Edwards; Swanson
- Synopsis:
- After Smallville refuses to make Superboy a special deputy he goes on a rampage of poor sportsmanship.
- Reprints: show reprint note before migration
- Script:
- Julius Schwartz
- Pencils:
- Morris Waldinger
- Inks:
- Tom Nicolosi
- Letters:
- ?
- Editing:
- Julius Schwartz (original editor)
- Genre:
- non-fiction
- Reprints: show reprint note before migration
Credits for script, pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics (May 2007).
- Script:
- Edmond Hamilton
- Pencils:
- John Forte
- Inks:
- Sheldon Moldoff
- Letters:
- Vivian Berg (part 1); Milton Snapinn (part 2)
- Editing:
- Mort Weisinger (original editor)
- Genre:
- superhero
- Characters:
- Legion of Super-Heroes [Superboy; Brainiac 5; Saturn Girl; Sun Boy; Supergirl [also as Unknown Boy]; Cosmic Boy; Chameleon Boy; Phantom Girl; Mon-El]; Norm Eldor
- Synopsis:
- Superboy recalls a case when the Legionnaires were helped by a hero called Unknown Boy. It was only after Unknown Boy helped the Legion finish a case, that Superboy figured out that under the costume was Supergirl. Supergirl then recalled going through a red kryptonite cloud and losing her memory, but knowing she had to protect her secret identity, and so created the Unknown Boy costume.
- Reprints:
- From Adventure Comics (DC Comics, 1938 Series) #334 (July 1965)