Originally, NoLD was called Night of the Flesh Eaters. They had a full title screen with the little © symbol and everything.
When they changed the title, they left off the ©- and by a quirk of copyright law prior to 1976, anything without the © was automatically pubdommed. Suffice to say, Romero was a bit red-faced over that one.
And a bit of warning- I'm probably going to be putting together some other images tonight, so be prepared for me to spam your friends pages again. What can I say; I'm feeling creative.