The clever Michael Uslan (producer of every movie with Batman in it since 1989) had a brainstorm to hunt for a fun—and pivotal—piece of cultural history.
named Batman’s city after seeing a phone book listing for “Gotham
Jewelers,” and Michael found a February 1938 ad for the company in a
digital newspaper archive. Here’s another, from June, from the same Yonkers, NY paper: