The Boston Public Library (USA) has digitised its collection of legacy vinyl (crackle and hiss and all) at the Internet Archive, and it's the absolute epitome of a 50s–70s library record collection.
https://archive.org/details/vinyl_bostonpubliclibrary
Internet Archive: Digital Library of Free & Borrowable Books, Movies, Music & Wayback Machine

@AKMA

Wow! Thanks for the link. So many titles šŸ˜ : jazz albums, Shakespeare plays, Brecht's testimony before the House Un-American Activities Committee (!), Lenny Bruce (!).