Crisis on Multiple Earths Vol. 6 — Gerry Conway

The Justice League of America teams up with their heroic predecessors, The Justice Society of America, in this new collection featuring three adventures that have never been reprinted before. First, the two teams face the threat of Gorilla Grodd and the Secret Society of Super-Villains. Then, the JLA and JSA battle alongside the All-Star Squadron against the Crime Syndicate. In the third epic in this book, the teams take on the Crime Champions of Earth-1.