Post date: Feb 21, 2009 4:14:07 PM
I've always liked this particular stereopticon slide, which was used in movie theaters around 1910. It is from an ad in Moving Picture World.
Clearly, the slide projects a particular view of appropriate audience behavior. Yet the prohibition it commands also bears witness to the existence of the very activity it would proscribe.
I can almost hear the whistling and the stamping...