I remember one of the curators mentioning that they had a ton of WWII records for things like daily newscasts which due to wartime supply issues were made from less durable materials, and since they weren’t commercially valuable the owners hadn’t spent time transferring many of them to newer media.
https://irene.lbl.gov/
https://blogs.loc.gov/loc/2012/03/unlocking-sounds-of-the-pa...
I remember one of the curators mentioning that they had a ton of WWII records for things like daily newscasts which due to wartime supply issues were made from less durable materials, and since they weren’t commercially valuable the owners hadn’t spent time transferring many of them to newer media.