Justice League of America #41

Published by DC Comics in December 1965, Justice League of America #41 serves as a foundational piece of Silver Age comic history. The issue features the first appearance of the Key, a villainous mastermind created by writer Gardner Fox and artist Mike Sekowsky. During this era, the Justice League title was defined by its high-concept science fiction narratives and the team-up dynamics between established icons like Superman, Batman, and Wonder Woman, reflecting the imaginative, space-faring zeitgeist of the mid-1960s.

The creative team of Fox and Sekowsky was instrumental in shaping the early identity of the Justice League. Sekowsky’s distinct, energetic linework provided the visual template for these sprawling superhero ensemble pieces, while Fox’s scripts introduced complex, reality-bending threats that challenged the heroes' collective power. Upon its release, the issue was received as a standard but solid entry in the long-running series, contributing to the growing lore of the DC Universe during a decade that prioritized rapid expansion of its rogues' galleries.