| Issue | #34 |
| Published | July 1967 |
| Cover Price | 0.12 |
| Pages | 36 |
| Editing | Stan Lee |
| Characters | The X-Men (Cyclops, Marvel Girl, Angel, Beast, Iceman); Tyrannus |
| Genre | superhero |
| Pencils | Dan Adkins |
| Inks | Dan Adkins |
| Reprinted | in X-Men (Marvel, 1963 series) #82 |
| Characters | The X-Men (Cyclops, Marvel Girl, Angel, Beast, Iceman); V: Tyrannus, Mole Man, Factor Three |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Dan Adkins |
| Inks | Dan Adkins |
| Letters | Jerry Feldmann |
| Reprinted | in X-Men (Marvel, 1963 series) #82; in Marvel Special (Marvel Italia, 1994 series) #13 |