Fwiw: Process analysis pedantry – Obsolescent, is not yet obsolete. ie: In transition. I still collect reel-to-reel & piano rolls. It's all good.

Where do American school and public libraries order media from nowadays? Way, way, waaaaaay back in the day, they had a kind of monthly “greensheet” for books, vinyl and periodicals. I don't think Folkways could have stayed in business as long as they did without the massive institutional patronage they got from it.