Book excerpt: 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.