Related background story and YouTube video links:
http://www.wfyi.org/news/articles/unexpected-find-time-capsule-at-old-state-hospital-site
https://www.youtube.com/watch?v=zCfZyTM0VrA
https://www.youtube.com/watch?v=QjjMCsszDGw
https://www.youtube.com/watch?v=5_q-ooRylvY
I hope those links include deaf people that can read lips explaining what the scientists are saying.
I think I did catch one snippet regarding their research: “....not only leads to blindness but loss of hearing as well.”
Those reel reminds me of the 1999 version of The House on Haunted Hill. The movie had alot of black and white filming when explaining the activities in a former Insane Asylum inside the huge house.