Issue Details

Cover Details

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.
Genre	superhero
Script	Robert Bernstein
Pencils	George Papp
Inks	George Papp
Letters	Joe Letterese
Notes	Reworked from "Superman's Big Brother" in Superman (DC, 1939 series) #80. 1st appearance of Mon-El.
Reprinted	in Superboy (DC, 1949 series) #129; in Adventure Comics (DC, 1938 series) #494; in Legion of Super-Heroes Archives, The (DC, 1991 series) #1; in Superman: Tales from the Phantom Zone (DC, 2009 series) #[nn]

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. He 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.
Genre	superhero
Script	Robert Bernstein
Pencils	George Papp
Inks	George Papp
Letters	Joe Letterese
Reprinted	in Superboy (DC, 1949 series) #129; in Adventure Comics (DC, 1938 series) #494; in Legion of Super-Heroes Archives, The (DC, 1991 series) #1; in Superman: Tales from the Phantom Zone (DC, 2009 series) #[nn]