You know the fun thing about computers and digitization? You can write software to export its data in a way that can be reprinted onto physical paper. I'm not s

You know the fun thing about computers and digitization? You can write software to export its data in a way that can be reprinted onto physical paper. I'm not sure if libraries do that, and I'm sure they wouldn't reprint each and every line on separate cards and store them in massive tombs still, but in theory they could have a hardcopy in a few massive binders somewhere. Of course it'll be out of date the instant it's printed, but that's true of old card catalogs too.