Gotham by Gaslight

Gotham by Gaslight: An Alternative History of the Batman is a DC Comics one-shot by Brian Augustyn and Mike Mignola, with inks by P. Craig Russell and an introduction (written in the character of Jack the Ripper) by Robert Bloch. The story revolves around a 19th-century version of Bruce Wayne making his debut as Batman just as Jack the Ripper has arrived in Gotham City. Gotham by Gaslight is considered to be the first Elseworlds story in which DC Comics characters from alternate timelines or realities are featured in stories outside of the DC Universe canon. At the time the story was first published, the Elseworlds concept had not been established yet and initial printings were not labeled as such.