Justice League of America #39

Published by DC Comics in 1965, Justice League of America #39 was a key installment in the Silver Age of comic books. At this stage in the series' history, the title served as the flagship team-up book for DC's greatest heroes, written by Gardner Fox and illustrated by Mike Sekowsky. The issue is notable for its exploration of the team dynamics during an era when the Justice League had become a foundational pillar of the publisher's expanded multiverse mythology.

The story features the iconic Justice League lineup including Superman, Batman, Wonder Woman, Green Lantern, and the Flash as they confront the threat of the Key. Mike Sekowsky’s distinct, energetic pencils defined the visual aesthetic of the series for years, emphasizing the grand scale of the team's cosmic adventures. The issue was received as a quintessential example of the mid-1960s superhero team dynamic, balancing individual character arcs with the high-stakes collaborative storytelling that cemented the Justice League's enduring popularity.