Crisis on Multiple Earths Book 3: Countdown to Crisis

Gerry Conway with Jerry Serpe, Keith Pollard, Dick Dillin, Sal Trapani, Rick Buckler, Marv Wolfman, Gene D'Angelo, Dick Giordano, John Beatty, Jerry Ordway, Frank McLaughlin, Kurt Busiek, George Pérez, Chuck Patton, Carl Gafford, Pablo Marcos, Roy Thomas, Dave Hunt, Gaspar Saladino, Alan Kupperberg, Jim Starlin, Bob Smith, Don Heck, Mike DeCarlo, Romeo Tanghal, Joe Kubert