| Cover Artist | Danny Crespi |
| Cover Inker | Frank Giacoia |
| Cover Penciler | Gil Kane |
| Editor | Stan Lee |
| Inker | Dick Ayers |
| Letterer | Sam Rosen |
| Penciler | Werner Roth |
| Writer | Roy Thomas |
| Genre | Superhero |
| Published in | New York, New York USA |
| Pages | 32 |
| Characters | Cyclops (Scott Summers), Marvel Girl (Jean Grey), Angel (Warren Worthington III), Beast (Hank McCoy), Iceman (Bobby Drake), Professor X (Charles Xavier) |
| Story Location | New York: Westchester County, New York City, Unknown Midwestern state, Central America: San Rico, Pyramid of Kukulcán (Destroyed) |
| Collects | "Holocaust!" #26 |
| Links | Issue link · Reprint link |
| Notes | This issue reprints X-Men #25 with new cover art.
Reprinted Issue:
X-Men Vol 1 #26, November, 1966 |
