- Script:
- Alvin Schwartz ?
- Pencils:
- Wayne Boring
- Inks:
- Stan Kaye
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superman; Lois Lane; Perry White; Dr. Ephraim Potts (Intro); The Professor [Dr. Bertram Smiggs] (Intro, Villain)
- Synopsis:
- As a reward for saving Lois's life, Superman lets Dr. Potts perform a complete set of scientific tests on his powers. But Dr. Smiggs tries to horn in the act with criminal intent.
pg. 4, panel 3 reproed in STERANKO'S HISTORY OF THE COMICS (last pg.)
- Script:
- William Woolfolk
- Pencils:
- Al Plastino
- Inks:
- Al Plastino
- Colors:
- ?
- Letters:
- ?
- Genre:
- superhero
- Characters:
- Superman; Kizo; Mala; U-Ban; Jor-El (flashback); Perry White; Lois Lane
- Synopsis:
- Superman meets three Kryptonian brothers who were convicted and sentenced by Krypton's Ruling Council to a sentence of suspended animation adrift in space due to their efforts to overthrow the Council and rule Krypton. Now that they have crashed on Earth they plan to rule it instead. Superman tricks them into turning on each other and they knock themselves out. Superman returns them to suspended animation and exiles them back into space.
- Reprints:
The first appearance of other survivors of Krypton. In this story, the natives of Krypton are called Kryptonites. All Kryptonites have x-ray vision, super strength, and super speed, but flying is new to them. Writing credit from reprint.