| Issue | #21 |
| Published | March 1941 |
| Cover Price | 0.10 USD |
| Pages | 68 |
| Editing | ? |
| Notes | data from Jerry Bails index cards & Howard Keltners Golden Age index |
| Genre | superhero |
| Pencils | Lew Glanzman (signed) |
| Inks | Lew Glanzman (signed) |
| Letters | typeset |
| Notes | data from Jerry Bails index cards & Howard Keltners Golden Age index |
| Characters | Great Question (Villain) |
| Pencils | Sam Decker |
| Inks | Sam Decker |
| Notes | Title and character info from Lou Mougin, June 2009. |
| Script | John F. Kolb |
| Pencils | John F. Kolb |
| Inks | John F. Kolb |
| Notes | Title and art credit from Lou Mougin, June 2009. |
| Script | Frank Thomas |
| Pencils | Frank Thomas |
| Inks | Frank Thomas |
| Pencils | Bob Lubbers |
| Inks | Bob Lubbers |
| Script | Duke Carey |
| Pencils | Sam Glanzman |
| Inks | Sam Glanzman |
| Letters | typeset |
| Pencils | Harry Francis Campbell |
| Inks | Harry Francis Campbell |
| Notes | First appearance. |
| Script | Lew Glanzman |
| Pencils | Lew Glanzman |
| Inks | Lew Glanzman |
| Notes | Title from Lou Mougin, June 2009. |
| Characters | T.N.T. [Treve N. Thorndyke] (Intro and origin) |
| Pencils | Dan Gormley |
| Inks | Dan Gormley |
| Notes | Title and character info from Lou Mougin, June 2009. |
| Characters | The Witch (Villain) |
| Script | Martin Filchock |
| Pencils | Martin Filchock |
| Inks | Martin Filchock |
| Notes | Title and character info from Lou Mougin, June 2009. |
| Script | Roy Humphries |
| Pencils | Joseph A Kalliff |
| Inks | Joseph A Kalliff |
| Notes | data from Jerry Bails index cards & Howard Keltners Golden Age index |