| Issue | #21 |
| Published | September 1941 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Malcolm Reiss (Editor); Gene Fawcette (Art Director) |
| Genre | jungle |
| Pencils | Dan Zolnerowich (signed) |
| Inks | Dan Zolnerowich (signed) |
| Characters | Malu (introduction, villain); Wumi (introduction, villain); the Storm Monster (introduction, villain, death) (a dinosaur); Kobo (introduction) |
| Genre | jungle |
| Script | ? [as Frank Riddell] |
| Pencils | Dan Zolnerowich |
| Inks | Dan Zolnerowich |
| Notes | The story title is taken from the cover blurb. |
| Characters | Prof. Gordon (introduction); Moore (introduction) |
| Genre | jungle |
| Script | ? [as J.J. King] |
| Pencils | Al Gabriele |
| Inks | Al Gabriele |
| Characters | Darya (introduction, villain, death); vulture worshippers and their priest (introduction, villain, death); Siki (introduction) |
| Genre | jungle |
| Script | ? [as "Mack"] |
| Characters | The Cobra Men (introduction, villain); The Monkey Cult (introduction) |
| Genre | jungle |
| Script | ? [as W.B. Hovious] |
| Pencils | Richard Case? |
| Inks | Richard Case? |
| Genre | jungle |
| Script | Toni Blum? [as Bob Anthony] |
| Letters | typeset |
| Genre | adventure |
| Script | ? [as Pierre La Rue] |
| Pencils | Al Stahl? |
| Inks | Al Stahl? |
| Characters | Bert Lewis (introduction); Mr. Lewis (introduction) |
| Genre | jungle |
| Script | ? [as Ed Hunt] |
| Pencils | Al Walker |
| Inks | Al Walker |
| Characters | Captain Force (introduction); Otto Schmutzig (introduction, villain); Pete (introduction, villain, death); Pete's partner (introduction, villain, death) |
| Genre | jungle |
| Script | ? [as Roy L. Smith] |
| Pencils | Henry Kiefer |
| Inks | Henry Kiefer |
| Characters | Eric (guest); Arabs (villain) |
| Genre | jungle |
| Script | ? [as Victor Ibsen] |
| Pencils | Tom Gill? |
| Inks | Tom Gill? |
| Characters | Art Kennedy (introduction); The Tutans (introduction, villain) |
| Genre | jungle |
| Script | ? [as Courtney Thomason] |
| Pencils | Seymour Reit |
| Inks | Seymour Reit |