#keysortcards — Public Fediverse posts
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@androcat Edge-notched cards: https://en.wikipedia.org/wiki/Edge-notched_card
I think I first heard of them through the swtory of how the Whole Earth Catalogue used these to manage their subscriber database. Kevin Kelly's written on that here:
https://kk.org/thetechnium/one-dead-media/
Edit: Hashtaggery.
#EdgeNotchedCards #WholeEarthCatalog #KevinKelly #KeysortCards #InDecks #InDecksCards #McBeeCards