From a story on technologyreview.com by Allison Arieff headlined “Writing about the history of keyboards”:

When the designer and typographer Marcin Wichary stumbled upon a tiny museum just outside Barcelona five years ago, the experience tipped his interest in the history of technology into an obsession with a very particular part of it: the keyboard.

“I have never seen so many typewriters under one roof. Not even close,” he said on Twitter. “At this point, I literally have tears in my eyes. I’m not kidding. This feels like a miracle.”