| Issue | #21 |
| Published | September 1941 |
| Cover Price | 0.10 USD |
| Editing | France Herron |
| Characters | Captain Marvel [Billy Batson] Three Lieutenant Marvels [Fat Marvel [Billy Batson]; Hill Marvel [Billy Batson]; Tall Marvel [Billy Batson]] |
| Genre | superhero |
| Pencils | C. C. Beck |
| Inks | C. C. Beck |
| Reprinted | in Shazam! Archives, The (DC, 1992 series) #3 (November 2002) |
| Characters | Captain Marvel [Billy Batson]; Three Lieutenant Marvels [Fat Marvel [Billy Batson] (first appearance; origin); Hill Marvel [Billy Batson] (first appearance; origin); Tall Marvel [Billy Batson] (first appearance; origin)]; Joe; Dr. Sivana [Thaddeus Sivana] (villain); Captain Death (villain); Herr Geyer (villain) |
| Synopsis | Billy meets three boys with the same name, and grants them a portion of his powers. |
| Genre | superhero |
| Pencils | C. C. Beck |
| Inks | C. C. Beck |
| Reprinted | in Shazam! Archives, The (DC, 1992 series) #3 (November 2002) |
| Genre | western |
| Pencils | Alex Blum? |
| Inks | Alex Blum? |
| Genre | adventure |
| Pencils | Clem Weisbecker? |
| Inks | Clem Weisbecker? |
| Characters | Otto Bund (Villain; Intro); Blitzys (Villain) |
| Genre | spy; superhero |
| Script | Otto Binder? |
| Pencils | Charles Sultan |
| Inks | Charles Sultan |
| Colors | Otto Binder? |
| Pencils | Carl Formes (LaRac Semrof) |
| Inks | Carl Formes (LaRac Semrof) |
| Letters | Typeset |
| Genre | detective |
| Pencils | Ken Battefield? |
| Inks | Ken Battefield? |
| Characters | Anita (Guest Star); Nero (Guest Star) |
| Genre | jungle |
| Pencils | Mac Raboy |
| Inks | Mac Raboy |
| Notes | Part 5 of Golden Flask Quest; title from last issue blurb |
| Characters | Half-Man (Villain; Intro; Origin) |
| Genre | occult; superhero |
| Pencils | Pete Costanza? |
| Inks | Pete Costanza? |
| Notes | Story continues in next issue. |