Justice League of America #40

Published by DC Comics in November 1965, Justice League of America #40 is a notable entry in the Silver Age of comic books. It features a story titled 'The Last Case of the Justice League of America,' written by Gardner Fox and illustrated by Mike Sekowsky, who served as the series' primary artist during its formative years. The issue is reflective of the era's focus on high-stakes, imaginative team-ups, characteristic of Fox's tenure in building the mythos of DC's premier superhero team.

The issue is particularly remembered by enthusiasts for its cover art, also by Sekowsky, which creates an intriguing visual hook for the reader. As part of a series that defined the concept of the shared universe for DC, this issue maintains the energetic, slightly surreal tone of mid-sixties storytelling. While not as frequently cited as the team's first appearance, it remains a stable piece of comic history representing the standard creative output of the mid-1960s industry.