Entries are listed in chronological order (i.e., the oldest comics are at the top).
| Uncanny X-Men #1 1st X-Men (Professor X, Angel, Beast, Cyclops, Iceman, Marvel Girl). 1st Magneto |
| Uncanny X-Men #2 1st Vanisher |
| Tales Of Suspense #49 (Iron Man) |
| Avengers #3 |
| Uncanny X-Men #3 1st Blob |
| Uncanny X-Men #4 1st Brotherhood of Evil Mutants (Magneto, Scarlet Witch, Quicksilver, Toad, Mastermind) |
| Uncanny X-Men #5 |
| Strange Tales #120 |
| Fantastic Four #28 |
| Uncanny X-Men #6 |
| Uncanny X-Men #7 |
| Amazing Spider-Man annual #1 1st Sinister Six (Doctor Octopus, Electro, Kraven, Mysterio, Sandman, Vulture) |
| Untold Tales of Spider-Man #20-22 |
| Uncanny X-Men #8 1st Unus |
| Untold Tales of Spider-Man '97 |
| Uncanny X-Men #9 |
| Uncanny X-Men #10 1st Savage Land. 1st Ka-Zar & Zabu |
| Fantastic Four #36 1st Frightful Four (Wizard, Paste Post Pete, Sandman, Medusa) |
| Uncanny X-Men #11 1st Stranger |
| Uncanny X-Men #12-13 1st Juggernaut |
| Uncanny X-Men #14-18 1st Sentinels |
| Fantastic Four annual #3 / Fantastic Four 40th Wedding Anniversary Special Mr. Fantastic & Invisible Girl married |
| Marvels #2 |
| Uncanny X-Men #19 1st Mimic & Vera Cantor |
| Uncanny X-Men #20-21 |
| Uncanny X-Men #22-23 |
| Uncanny X-Men #24 |
| Uncanny X-Men #25-26 |
| Uncanny X-Men #27 |
| Uncanny X-Men #28 1st Banshee |
| Uncanny X-Men #29 |
| Uncanny X-Men #30 |
| Uncanny X-Men #31 1st Candy Southern & Cobalt Man |
| Strange Tales #150-168 (Nick Fury) 1st Baron Strucker in modern age. 1st Contessa & Clay Quatermain |
| Uncanny X-Men #32-33 |
| Uncanny X-Men #34 |
| Uncanny X-Men #35 |
| Uncanny X-Men #36 |
| Uncanny X-Men #37-39 |
| Uncanny X-Men #40 |
| Uncanny X-Men #41-42 |
| Avengers #53 |
| Uncanny X-Men #43-45 |
| Uncanny X-Men #46 |
| Uncanny X-Men #48 |
| Uncanny X-Men #49-52 1st Polaris & Mesmero |
| Avengers #60 Marriage of Janet Van Dyne & Henry Pym |
| Uncanny X-Men #53 |
| Sub-Mariner #14 |
| Uncanny X-Men #54-56 1st Havok & Living Monolith |
| Uncanny X-Men #57-63 1st Sauron, 1st Savage Land Mutates |
| Uncanny X-Men #64 1st Sunfire |
| Uncanny X-Men #65 |
| Uncanny X-Men #66 |
| X-Men/Spider-Man #1 |
| X-Men: The Hidden Years #1-9 |
| X-Men: The Hidden Years #10-15 |
| X-Men: The Hidden Years #16-22 |
| Amazing Adventures #12-13 |
| Marvel Team-Up #4 |
| Amazing Adventures #15 1st Griffin |
| Avengers #110 |
| Avengers #111 |
| Captain America #169-175 Secret Empire arc |
| Hulk #171-172 |
| Marvel Team-Up #23 |
| Giant-Size X-Men #1 New X-Men team. 1st Storm, Nightcrawler, Colossus, Storm, and Thunderbird. |
| Classic X-Men #1 (2nd story) |
| Uncanny X-Men #94-95 |
| Uncanny X-Men #97 |
| Uncanny X-Men #98-101 1st Phoenix, 1st Black Tom |
