The annual team-up between the Justice League of Earth-One and the Justice Society of Earth-Two takes both to a brand new world: Earth-X, the home of Uncle Sam and the Freedom Fighters!
Alan Brennert, Len Wein, Mike W. Barr, Walter Gibson, Paul Levitz, Cary Bates, Dick Giordano, Carmine Infantino, Joe Kubert, José Luis García-López, Walt Simonson & Tom Yeates
Mark Waid, Geoff Johns, John Broome, Gardner Fox, Len Wein, Cary Bates, Bob Kanigher, Marv Wolfman, Francis Manapul, Brian Buccellato, William Messner-Loebs, Scott Kolins, Mike Wieringo, Alberto Dose, Ethan Van Sciver, Carmine Infantino, Ross Andru, Irv Novick, Andy Kubert, Harry Lampert, Everett Hibbard, Mike Collins & George Pérez