MonoMix_1977 said:
I know about most, if not all, of the dialouge and visual changes for the Mono and Stereo versions of ANH and TESB. I was the one who recently added them in detail to the Wikipedia article before it was almost completely abolished, save the deleted scenes, by "the source police."
So what are these visual changes between the film prints with mono and stereo tracks you're talking about? Empire never even got a mono mix.