I was, evidently, incorrect:
In New York City in the early 1890s, nighttime clouds served as projection screens for giant ads. A 3,000-pound lamp atop Joseph Pulitzer's World building beamed text and figures from the news or from sponsors onto the clouds; the messages were visible as far away as New Jersey and Long Island.
The same technique was used in the '30s, in England.
Gotham City is generally considered a fictionalized New York, of course.