"Gotham by Gaslight: An Alternative History of the Batman is a collectible comic book published by DC Comics in 1990 during the Copper Age. The story, written by David Hornung, Brian Augustyn, P. Craig Russell, and Mike Mignola, explores an alternate history of Batman in which Jack the Ripper is the Joker and Commissioner Tolliver is Batman. The cover art was done by Elizabeth Chadwick and Mike Mignola. This unique take on the Batman universe features a mix of superheroes and historical figures, making it a must-have for fans of alternative comic book histories."