WHAT IF

#13: What If...Professor X of the X-Men had become...the Juggernaut
Phoenix: The Untold Story
#32: What If...Phoenix Had Not Died
#33: What If...Phoenix Rose Again
#60: What If...X-Men Wedding Album
#77: What If...Legion Had Killed Magneto

X-Men Age of Apocalypse: What If Legion Had Killed Xavier and Magneto
X-Men Deadly Genesis: What If Xavier's Secret Second Team Had Survived
Astonishing X-Men: What If Jean Grey was Resurrected Instead of Colossus

AGE OF APOCALYPSE (1st series)

Factor X #3
Factor X #4
X-Men: Omega

X-MEN: FAIRY TALES

#1
#3

THE ADVENTURES OF THE X-MEN

#4
#5
#6
#9
#10
#12

(Stand alone title)
Wolverine: Knight of Terra