The 1970s adventures of the World's Greatest Heroes continue as the Justice League of America meets fellow heroes including the Justice Society of America， the Legion of Super-Heroes， and a team of heroes from the long-gone past。

The Justice League moves into the second half of the 1970s with adventures guest-starring the Justice Society of America， the Legion of Super-Heroes， and a group of heroes from the long-gone past， including Jonah Hex， Viking Prince， Enemy Ace， and more。 Plus， the League's mascot， Snapper Carr， turns against the team， the Phantom Stranger helps the team battle a returning pantheon of ancient gods， the Martian Manhunter faces Despero for the lives of the League， and the Secret Society of Super-Villains swap bodies with the World's Greatest Super-Heroes。 Plus， Black Lightning is invited to join the JLA--but he turns down the invitation for mysterious reasons。
Collects Justice League of America #147-181。