X-Men: Twilight of the Mutants

Roy Thomas and Arnold Drake
Don Heck, Werner Roth and Neal Adams
with Gary Friedrich, George Tuska and Jim Steranko

The End of the X-Men
X-Men #43
X-Men #44
X-Men #45
Avengers #53
X-Men #46
X-Men #47
X-Men #48
X-Men #49
X-Men #50
X-Men #51
X-Men #52
X-Men #53

The Man Called Havok
X-Men #54
X-Men #55
X-Men #56
X-Men #57
X-Men #58
X-Men #59
X-Men #60
X-Men #61
X-Men #62
X-Men #63
X-Men #64
X-Men #65
X-Men #66