Justice League of America #21
dc • 1963
- Series
- Justice League of America
- Issue
- 21
- Publisher
- DC
- Cover date
- Aug 31, 1963
- Story title
- Crisis on Earth-One!
Where to find one
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Where it came from
Published in August 1963, Justice League of America #21 holds a notable place in comic book history as the first installment of the now-legendary annual crossover events between the Justice League of America and the Justice Society of America. This issue, titled Crisis on Earth-One, established the concept of a multiverse within the DC Comics framework, allowing writers to reconcile the Golden Age versions of characters with their contemporary Silver Age counterparts.
The issue was written by Gardner Fox and illustrated by Mike Sekowsky, with a cover by Sekowsky and Bernard Sachs. Fox’s decision to bridge the two eras through dimensional travel was a creative solution to integrate legacy characters like the original Flash and Green Lantern into the ongoing Justice League narrative. The title was received with significant enthusiasm by readers, effectively turning what could have been a one-off gimmick into a beloved tradition that returned almost every year for the next two decades.
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About Justice League of America #21
Justice League of America #21 is a issue in the Comic Books catalog on collecto.rs. Dc • 1963. Catalog data is sourced from Comic Vine. No collectors on collecto.rs publicly track this issue yet — adding yours would make you the first.
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