| Unofficial Action Comics Index |
Credits:
| Story | Otto Binder |
| Pencils | Wayne Boring |
| Inks | Stan Kaye |
| Editing | Mort Weisinger |
Feature Character(s):
- Superman (last in Superman's Pal Jimmy Olsen #27/3; next in flashback in Superman Vol. 1 #130)
Supporting Character(s):
- Jimmy Olsen (in between Superman's Pal Jimmy Olsen #27/3 and Superman's Pal Jimmy Olsen #28; hair is blond in error)
Villain(s):
- King Krypton (first appearance; seen in flashback as an unidentified Kryptonian scientist, devolved and sent into orbit prior to Krypton's destruction; dies from kryptonite poisioning, see Comments)
- a tribe descended from ancient Romans (first appearance of all)
Other Character(s):
- two jungle guides (first appearance of both; see Comments)
- A lab assistant on Krypton (first appearance; dies in flashback)
Location(s):
- Space Sector 2813
- Krypton (in flashback)
- Space Sector 2814
- Earth
- Central Africa
- Earth
Comment(s):
- Near the start of the story, one of the guides is not seen after King Krypton appears.
- This story reveals that Kryptonians turn green in the last stages of kryptonite poisoning.
Story Reprinted in:
- Superman Annual #7/5 (Summer 1963)
- Super-Heroes Battle Super-Gorillas #1 (Winter 1976)
Credits:
| Story | Otto Binder |
| Art | Jim Mooney |
| Editing | Mort Weisinger |
Feature Character(s):
- Tommy Tomorrow (in between issues #237/2 and #239/3)
Villain(s):
- Professor Jaxon (AKA "Genius" Jones; first appearance; aids the Space Looter in escape)
- Noxaj Rosseforp (first appearance; 4th Dimension version; in flashback)
- Space Looter (first appearance; a convict released to take part in an alleged experiment)
- Ecaps Retool (first appearance; 4th Dimension version; in flashback)
Other Character(s):
- Planeteer Commander
- Ymmot Worromot (first appearance; 4th Dimension version of Tommy Tomorrow; in flashback)
- other inhabitants of the 4th Dimension (first appearance of all)
Location(s):
- Planeteer Headquarters
- Space Alcatraz
- 4th Dimension
Story Reprinted in:
- The Greatest 1950s Stories Ever Told (1990)
- The Greatest 1950s Stories Ever Told #5 ([May] 1992)
Credits:
| Story | ? |
| Art | Howard Sherman |
| Editing | Mort Weisinger |
Feature Character(s):
- Congo Bill (in between issues #237/3 and #239/2)
Supporting Character(s):
- Janu the Jungle Boy (in between issues #237/3 and #239/2)
Other Character(s):
- "Safari" Sam (first appearance; creator of a safari correspondence school)
- Casper Quirt (first appearance; a member of a safari and a student of "Safari" Sam)
- other safari members
Location(s):
- somewhere in Africa