Fellows, back in the 1980's I read a few issues of a magazine named Art Direction.

I remember having read an article about how back then they made logo animations, like, for TV shows openings and stuff. And I remember it vaguely that some of those animations were made with slide projections or something like that.

Does anybody here know anything about that? Where can I find information material on it? I've searched a lot but get tons of results on PowerPoint and the like. TIA.