| Issue | #224 |
| Published | February 1970 |
| Cover Price | 0.15 |
| Pages | 36 |
| Editing | Mort Weisinger |
| Characters | Superman; Lois Lane; Super-Genius Baby |
| Synopsis | Superman playing with blocks in crib as Super-Genius Baby performs quantum physics! |
| Genre | superhero |
| Pencils | Curt Swan |
| Inks | Jack Abel |
| Characters | Super-Genius Baby (villain); Superman; Lois Lane; Nether; Professor Ulvo; green kryptonite |
| Genre | superhero |
| Script | Robert Kanigher |
| Pencils | Curt Swan |
| Inks | George Roussos |
| Notes | Imaginary story |
| Characters | various |
| Pencils | various |
| Inks | various |
| Notes | Reprints page from Action #1, covers of 1st issues of Superman, Superboy, Jimmy Olsen, Lois Lane, 1st Superman Annual |
| Colors | b&w |
| Letters | typeset |