Before Uncanny X-Men #1

Rise of Apocalypse LS 1-4

Baal takes En Sabah Nur to discover Rama-Tut's secrets. En Sabah Nur gets ready to take on the world.

En Sabah Nur prepares for vengeance against Rama-Tut & Ozymandias.

Rama-Tut tries to force En Sabah Nur's fealty.

Apocalypse destroys the Sphinx & enslaves Ozymandias.

Black Knight: Exodus

The Black Knight & Sersi witness the creation of Exodus.

The Further Adventures of Cyclops & Phoenix

Essex begins experimenting on human mutation.

Apocalypse takes control of the Hellfire Club.

Essex accepts Apocalypse's offer to become Sinister.

Sinister turns on Apocalypse, forcing him into hibernation.

Wolverine 25 "Heir Aid"

Logan as a kid (?)

Marvel Comics Presents 93-98

"Wild Frontier" (Logan).

Further Adventures of Cyclops & Phoenix

Origin of Sinister.

Wolverine 35-37

Logan meets Hemingway during WW1.

X-Force 64

X-Force in Latveria's past.

Uncanny X-Men 268

Logan/Captain America in WWII.

WildCATS/X-Men: Golden Age

Wolverine/Zealot vs. alien Nazis in WW2.

Uncanny X-Men 49 / Uncanny Origins 6

Hank McCoy born.

Classic X-Men 16

Banshee meets Maeve Rourke.

Uncanny X-Men 50 / Uncanny Origins 6

Hank grows up.

Uncanny Origins 2

Childhood of Quicksilver.

Logan: Path of the Warlord

Logan vs. Kimora.

Professor Xavier & the X-Men 12

Origin of Juggernaut.

Classic X-Men 41-42 /Uncanny Origins 1

Scott and Sinister in the orphanage.

Uncanny Origins 8

Childhood of Nightcrawler.

Uncanny X-Men 117/Uncanny Origins 9

Xavier vs. Shadow King.

Untold Tales of Spider Man -1

Logan meets Spider-Man's parents.

Uncanny X-Men 161

Xavier/Magneto vs. Baron von Strucker.

Classic X-Men 19

Magneto quits life as a Nazi hunter.

Logan: Shadow Society

Logan and Carol Danvers vs Hellfire Club.

Marvel Comics Presents 72-86

"Weapon X" (Logan).

Wolverine -1

Logan looks for answers about Weapon X.

Uncanny X-Men 54 /Uncanny Origins 3

Angel grows wings.

Uncanny Origins 9

Storm's origin.

Classic X-Men 15

Formation of Starjammers.

Uncanny X-Men -1

Origin of Sentinels.

X-Factor -1

Havok's childhood.

X-Men -1

Xavier talks to Magneto.

Uncanny X-Men 38

Xavier begins searching for students.

Uncanny X-Men 39-42 / Uncanny Origins 1

Cyclops joins X-Men.

Uncanny X-Men 44-46

Iceman joins X-Men.

Uncanny X-Men 55-56 / Uncanny Origins 3

Angel joins X-Men.

Uncanny X-Men 51-53 / Uncanny Origins 6

Hank vs. El Conquistador.

Classic X-Men 44

Rogue kisses Cody.

Generation X -1

Emma meets Banshee.