Justice League of America #131

Few covers from 1976 land with quite the unsettling wit of this one: Superman, the Flash, Aquaman, Hawkman, the Atom, and Elongated Man are crammed behind cage bars while a menagerie of very free animals — elephant, giraffe, bear, tiger, and more — crowd around them, all beneath a sign reading "DO NOT FEED THE HUMANS." Ernie Chan's cover art flips the zoo dynamic on its head with clean, confident linework that makes the premise immediately, darkly funny. With Gerry Conway scripting and the promise of "The Beasts Who Thought Like Men," this June issue offers a premise as clever as any the Justice League faced that decade.