| Issue | #21 |
| Published | July 1, 1944 |
| Cover Price | 0.10 USD |
| Pages | 44 |
| Editing | Richard Kraus |
| Characters | Captain Marvel, Jr. [Freddy Freeman] |
| Genre | superhero |
| Pencils | Mac Raboy |
| Inks | Mac Raboy |
| Pencils | Mac Raboy |
| Inks | Mac Raboy |
| Characters | Captain Marvel, Jr. [Freddy Freeman] |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | Mac Raboy |
| Inks | Mac Raboy |
| Characters | Captain Marvel, Jr. [Freddy Freeman]; Sivana (villain) |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | Al Carreno? |
| Inks | Al Carreno? |
| Genre | Gags |
| Script | Art Helfant |
| Pencils | Art Helfant |
| Inks | Art Helfant |
| Characters | Captain Marvel, Jr. [Freddy Freeman] |
| Genre | superhero |
| Pencils | Al Carreno? |
| Inks | Al Carreno? |
| Script | David Taylor Marke |
| Letters | typeset |
| Characters | Captain Marvel, Jr. [Freddy Freeman]; Lightning Larry Davis (first appearance) |
| Genre | superhero |
| Pencils | Al Carreno? |
| Inks | Al Carreno? |