Marvel & DC Key Comic Issues
Explore 279 collector guides covering major and minor Marvel & DC comic milestones.
Major Key Comic Issues
Browse major milestones, debuts and defining comic-book keys.
279 major key issues
Major Key
Avengers #57
First appearance of the Vision, who is introduced as an android weapon before his connection with the Avengers develops.
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Major Key
Avengers #59
In stock
Yellowjacket first appears and claims to have killed Hank Pym.
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Major Key
Captain America #100
Captain America takes over the numbering of Tales of Suspense in his first solo-titled issue of the Silver Age.
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Major Key
Incredible Hulk #102
Launch of the Hulk’s solo numbering after Tales to Astonish.
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Major Key
Silver Surfer #1 (1968)
Launch of Silver Surfer's first solo series and expanded origin.
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Major Key
Wonder Woman #178
Beginning of Diana Prince’s depowered mod-era reinvention.
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Major Key
Captain America #109
Classic retelling of Captain America’s origin by Stan Lee and Jack Kirby.
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Major Key
Marvel Super-Heroes #18
First appearance of the original Guardians of the Galaxy.
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Major Key
Thor #165
First full appearance of Him, later known as Adam Warlock, in a major Thor conflict.
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Major Key
Amazing Spider-Man #86
Debut of Black Widow's classic black costume and modern visual identity.
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Major Key
Avengers #83
First appearance of Valkyrie, initially as an Enchantress-created persona.
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Major Key
Green Lantern #76
Beginning of the landmark Green Lantern/Green Arrow social-issues run.
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Major Key
Amazing Spider-Man #101
First appearance of Morbius, the Living Vampire.
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Major Key
Amazing Spider-Man #102
Concludes Morbius' introductory story and expands his origin.
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Major Key
House of Secrets #92
First appearance of the original Swamp Thing concept.
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