| Issue | #55 |
| Published | April 1969 |
| Cover Price | 0.12 |
| Pages | 36 |
| Editing | Stan Lee |
| Characters | The X-Men (Angel; Beast; Cyclops; Iceman; Marvel Girl); Alex Summers |
| Genre | superhero |
| Pencils | Barry Windsor-Smith [as Barry Smith] |
| Inks | Vince Colletta |
| Characters | F: The X-Men (Angel, Beast, Cyclops, Iceman, Marvel Girl);GS: Alex Summers (Havok; O continued); V: Living Pharaoh |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Don Heck; Werner Roth |
| Inks | Vince Colletta |
| Letters | Jean Izzo [Simek] |
| Characters | O: Angel (continued; becomes The Avenging Angel, w/ red-and-black costume); Professor X, Cyclops, Iceman |
| Genre | superhero |
| Script | Roy Thomas |
| Pencils | Werner Roth |
| Inks | Sam Grainger |
| Letters | Sam Grainger |
| Reprinted | in Marvel Special (Marvel Italia, 1994 series) #5 |