Marvel & DC Key Comic Issues
Explore 345 collector guides covering major and minor Marvel & DC comic milestones.
345 published key issues
Major Key
Amazing Spider-Man #31
First appearances of Gwen Stacy and Harry Osborn.
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Major Key
Avengers #16
Landmark roster change introducing the 'Kooky Quartet' era.
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Major Key
X-Men #12
First appearance of Juggernaut and major Xavier family history.
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Minor Key
Amazing Spider-Man #34
Early rematch that develops Kraven's obsession with Spider-Man.
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Major Key
Amazing Spider-Man #39
The Green Goblin discovers Spider-Man’s secret identity, beginning a landmark confrontation.
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Minor Key
Amazing Spider-Man #42
Mary Jane Watson’s face is fully revealed in a famous early appearance.
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Major Key
Fantastic Four #48
First full appearance of Silver Surfer and beginning of the Galactus Trilogy.
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Major Key
Fantastic Four #50
Conclusion of the Galactus Trilogy and Surfer's rebellion.
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Major Key
Amazing Spider-Man #50
Beginning of Spider-Man No More, a defining story about Peter Parker abandoning his heroic identity.
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