"What is...the Power?" #56
| Series | Uncanny X-Men |
| Number | Vol. 1 #56 |
| Publisher | Marvel Comics |
| Date | 1969-05 |
| Type | Comic Book, Softcover |
| Language | English |
| Inker | Tom Palmer* |
| Penciler | Neal Adams |
| Writer | Roy Thomas |
| Genre | Superhero |
| Published in | United States |
| Series | Uncanny X-Men |
| Number | Vol. 1 #56 |
| Publisher | Marvel Comics |
| Date | 1969-05 |
| Type | Comic Book, Softcover |
| Language | English |
| Inker | Tom Palmer* |
| Penciler | Neal Adams |
| Writer | Roy Thomas |
| Genre | Superhero |
| Published in | United States |