| Issue | #21 |
| Published | March 1957 |
| Cover Price | 0.10 USD |
| Pages | 36 |
| Editing | ? |
| Characters | Dennis Mitchell; Ruff |
| Genre | children; humor |
| Pencils | Hank Ketcham |
| Inks | Hank Ketcham |
| Synopsis | Reprints of 4 daily Dennis the Menace cartoons. |
| Genre | humor |
| Script | Hank Ketcham |
| Pencils | Hank Ketcham |
| Inks | Hank Ketcham |
| Letters | Hank Ketcham |
| Characters | Dennis Mitchell; Henry Mitchell; Alice Mitchell; Tommy Anderson; Ruff (splash panel only, not in story) |
| Genre | children; humor |
| Script | Fred Toole |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |
| Notes | A different story with the same title appears in Dennis the Menace (Hallden; Fawcett, 1959 series) #44. Once again Tommy has the wrong color hair; this time it's black. |
| Characters | Dennis Mitchell; Henry Mitchell; Alice Mitchell; Ruff |
| Genre | children; humor |
| Script | Fred Toole |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |
| Synopsis | Mimi wants a piano. |
| Genre | children; humor |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |
| Characters | Dennis Mitchell; Alice Mitchell; Ruff |
| Genre | children; humor |
| Script | Fred Toole |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |
| Reprinted | in Dennis the Menace Bonus Magazine Series (Fawcett, 1970 series) #152. |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |
| Letters | typeset |
| Synopsis | A crossword puzzle. |
| Characters | Dennis Mitchell; Henry Mitchell; Alice Mitchell; Ruff; George Wilson |
| Synopsis | Dennis decides it is Ruff's birthday. |
| Genre | children; humor |
| Script | Fred Toole |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |
| Synopsis | Reprints of 4 daily Dennis the Menace cartoons. |
| Genre | humor |
| Script | Hank Ketcham |
| Pencils | Hank Ketcham |
| Inks | Hank Ketcham |
| Letters | Hank Ketcham |
| Characters | Dennis Mitchell; Henry Mitchell; Alice Mitchell |
| Genre | children; humor |
| Script | Fred Toole |
| Pencils | Al Wiseman |
| Inks | Al Wiseman |