- Script:
- Robert Bernstein
- Pencils:
- George Papp
- Inks:
- George Papp
- Colors:
- ?
- Letters:
- Joe Letterese
- Genre:
- superhero
- Characters:
- Superboy [Kal-El]; Mon-El [also as Bob Cobb]; Martha Kent; Jonathan Kent; Krypto (cameo); Jor-El (flashback); Lara (flashback)
- Synopsis:
- When a space ship crashes outside Smallville, Superboy finds an amnesiac, super-powered youth who might be his older brother. He christens him Mon-El and sets him up with a secret identity, but he soon finds evidence that Mon-El is not, in fact, Kryptonian.
- Reprints:
Reworked from "Superman's Big Brother" in Superman (DC, 1939 series) #80.
1st appearance of Mon-El.
- Script:
- Henry Boltinoff
- Pencils:
- Henry Boltinoff
- Inks:
- Henry Boltinoff
- Colors:
- ?
- Letters:
- Henry Boltinoff
- Genre:
- humor
- Script:
- Robert Bernstein
- Pencils:
- George Papp
- Inks:
- George Papp
- Colors:
- ?
- Letters:
- Joe Letterese
- Genre:
- superhero
- Characters:
- Superboy; Mon-El [Bob Cobb] (origin); Martha Kent; Jonathan Kent; Lana Lang; Miss Joyce; King Mycerinua; Rhodopis; Jor-El (flashback); Lara (flashback); Phantom Zone
- Synopsis:
- Trying to prove Mon-El isn't actually Kryptonian, Superboy accidentally exposes him to lead, which both poisons him and returns his memory. Mon-El remembers that he is a space explorer from Daxam, who visited Krypton, meeting Jor-El and Lara, before arriving on Earth. To save his life, Superboy sends Mon-El into the Phantom Zone until he can cure him of his lead poisoning.
- Reprints:
- Script:
- Mort Weisinger
- Pencils:
- Curt Swan
- Inks:
- Stan Kaye
- Colors:
- ?
- Letters:
- typeset
- Script:
- Henry Boltinoff (signed)
- Pencils:
- Henry Boltinoff (signed)
- Inks:
- Henry Boltinoff
- Colors:
- ?
- Letters:
- Henry Boltinoff
- Genre:
- humor
- Script:
- Jerry Siegel
- Pencils:
- Curt Swan
- Inks:
- Stan Kaye
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superboy [Clark Kent]; Chief Parker
- Synopsis:
- The entire Smallville police force is quarantined so Superboy has to take their place.