PDB said:

Great project Andrea, can't wait to see the results. I found these Dolby Stereo trailers on YouTube a few years ago. They are circa late 1970s into the 80s, same era as the Mancini trailer (great trailer). Not great quality but there you go:

https://www.youtube.com/watch?v=8nZnBPwPRFY

https://www.youtube.com/watch?v=6u9GIHHkZOE

https://www.youtube.com/watch?v=nsRIVD8zwQU

I love this trailer. I persuaded one of the guys who uploaded it to Youtube to send me his VHS - I recaptured this and two other similar Dolby trailers for a higher quality preservation. Sadly his tape was a second generation copy, so even though I've cleaned up some particularly noisy frames there's still an obvious VHS 'shimmer', but I think my versions are about as good as they currently get (and they sound great on a surround system):

(edit: links removed since someone decided it was clever to upload my work to youtube without permission or credit)

(_,,,^..^,,,_ , I'll arrange to upload uncompressed versions of these for your project. They're all 480p).