[superphunthyme]

This one with Ted Nelson? https://youtu.be/RVU62CQTXFI

It's got the skeptical interviewer, and at 9:56 (with some lead-in before) there is a discussion of libraries, catalogs, tagging, etc.

Edit: and then he goes on to mention Dewey Decimal as well.

[EGreg]

Yess!! THANK YOU! For all these years, I couldn't find it. I appreciate this so much, thank you :)

[superphunthyme]

Welcome :)