| Issue | #21 |
| Published | February 12, 1943 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | Rod Reed? |
| Characters | Captain Marvel [Billy Batson] |
| Genre | superhero |
| Pencils | C. C. Beck |
| Inks | C. C. Beck |
| Characters | Captain Marvel [Billy Batson]; Steamboat; The Soothsayer [Nostradamus]; first appearance; death) |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | C. C. Beck? |
| Inks | C. C. Beck? |
| Characters | Captain Marvel [Billy Batson]; Adolf Hitler (villain) |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | C. C. Beck? |
| Inks | C. C. Beck? |
| Script | Carl G. Hodges |
| Letters | typeset |
| Characters | Captain Marvel [Billy Batson] |
| Genre | superhero |
| Pencils | C. C. Beck? |
| Inks | C. C. Beck? |
| Genre | Gags |
| Script | Al Liederman |
| Pencils | Al Liederman |
| Inks | Al Liederman |
| Characters | Captain Marvel [Billy Batson]; Steamboat |
| Genre | superhero |
| Script | Otto Binder |
| Pencils | C. C. Beck? |
| Inks | C. C. Beck? |
| Characters | Mary Marvel and Golden Arrow |