The Clue of the Broken Blade
| Series | The Hardy Boys |
| Publisher Series | Hardy Boys Mystery Stories |
| Publisher | Grosset & Dunlap, Inc. |
| Format | Hardback |
| Copyright | 1970 |
| ISBN | 0-448-08921-1 |
| Series Number | 21 |
Added by miketaylor81
| Series | The Hardy Boys |
| Publisher Series | Hardy Boys Mystery Stories |
| Publisher | Grosset & Dunlap, Inc. |
| Format | Hardback |
| Copyright | 1970 |
| ISBN | 0-448-08921-1 |
| Series Number | 21 |