have fun with oaister, where you can find things like the flash cleaner from 192x, or get informed about a problem that was solved approximately at the same time with the invention of a rust-proof corset. also interesting and for sure until today not indexed by google: a computer system identifying bacteria by monitoring colony forming process.

the scans of a book from emile berliner about the gramophone, etching the human voice (may 16th, 1888). where berliner writes about the patent quarrel that was decided in favour of bell, ignoring the invention of the electrical telephony by bourseuil, the role of philip reiss and the patent of león scott's phonautograph, adding edison but also the work of charles cros ...