I knew my grandfather Harvey Fletcher, very well. I was an adult when he died, in 1981. He and I talked about recorded sound, acoustics, and music, quite frequently. My father Robert Fletcher is also a physicist who worked at Bell Laboratories for his entire career.
I'm sorry I implied that...
From the book "The Mystery of Leopold Stokowsk," page 174:
However, even in Fantasia the hand of Harvey Fletcher could be felt, for it was the physicist who devised the process for recording on film...
I'm just interested that Vista Vision was the large-format film process that didn't get stereo to go along with it. A movie like High Society almost demands stereo, and when it arrived on DVD, it finally got the beautiful 5.1 mix it always deserved. I think it's a shame, about Vista Vision, but...
Just asking the question: why were Vista Vision films usually mono? Was it because there wasn't any room for the multi-channel soundtrack on the prints? Even early Cinemascope films like How to Marry a Millionaire were stereophonic.