Reprint of the original DC 100-Page Super Spectacular #6: Worlds Greatest Super Heroes.
Reprints of the following stories:
The Justice League of America starring in: "Crisis on Earth-One"
Originally Published in Justice League of America #21, August 1963
The Justice League of America starring in: "Crisis on Earth-Two"
Originally Published in Justice League of America #22, September 1963
Writer: Gardner Fox, Penciller: Mike Sekowsky, Inker: Bernard Sachs
Special Bonus - A Checklist of DC Super-Heroes, listing all of DC's properties at that time.
Inside Rear Cover (Page 99) - A Key to the Super-Heroes on the Cover (a short synopsis of each hero and their secret identity)
This is the third issue of this series. Although the issue is numbered "DC-6", there was no "DC-1, DC-2 or DC-3". Please see original issues for story synopses. Wraparound Cover of the JSA and JLA by Neal Adams & Dick Giordano - first time the full roster of each was featured with every counterpart imaginable, plus a couple of others.
Cover artwork reconstructed by Dick Giordano. At first glance it appears to be the same cover artwork as the original by Adams & Giordano, but it is not in fact a replica and has been re-illustrated by Giordano.