Justice League of America #55

Published by DC Comics in August 1967, Justice League of America #55 represents a transitional period in the Silver Age of comics. It features the team facing the menace of the Key, a classic villain who utilized a sophisticated array of psychic and technological weapons to challenge the League members on a psychological level. This era of the series was marked by a shift toward more complex, multi-layered storytelling that balanced individual character development with the grand, cosmic threats expected of the premier DC superhero team.

The issue features cover art and interior pencils by Mike Sekowsky, who served as the primary artist for the title for much of its early run. Sekowsky was instrumental in defining the visual language of the Justice League, focusing on dynamic layouts that emphasized the scale and coordination of a team rather than just individual heroics. His work during this period is highly regarded for its consistency and for cementing the aesthetic identity of the team before the series moved into the experimental Bronze Age styles of the following decade.