| Issue | #237 |
| Published | May 1971 |
| Cover Price | 0.15 USD |
| Pages | 36 |
| Editing | Julius Schwartz |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [July 2007] Inks previously credited to Neal Adams. |
| Characters | Superman [Clark Kent]; monsters |
| Synopsis | Formerly-human, green monsters swarming Superman |
| Genre | superhero |
| Pencils | Neal Adams |
| Inks | Dick Giordano |
| Notes | Credits for pencils and inks confirmed from Julius Schwartz's editorial records, provided by DC Comics. [July 2007] Inks previously credited to Neal Adams. |
| Characters | bandits (villains); Superman [Clark Kent]; Morgan Edge; Clark Kent; Sand creature; Lois Lane |
| Synopsis | Superman is carrying a virus that turns the people of Earth into monsters. |
| Genre | superhero |
| Script | Denny O'Neil |
| Pencils | Curt Swan |
| Inks | Murphy Anderson |
| Notes | Superman's powers lessen greatly in this issue. |
| Script | E. Nelson Bridwell |
| Letters | Typeset |