To the growing list of things they don't make like they used to, add the distinctive corporate letterhead. Letterheady, a blog that describes itself as "an online homage to offline correspondence," recently posted a particularly baroque example from the Nikola Tesla Company.
Tesla, Edison's arch-rival and the inventor of alternating-current (AC) electrical systems, made sure his correspondents knew what devices he was responsible for. Clockwise from top left (according to Letterheady), the highlighted inventions included an oscillation transformer, a remote-control instrument (for a boat, in this case), a steam-and-gas turbine, and an induction motor. At the center is Wardenclyffe Tower, a trans-Atlantic communications tower, proposed for Long Island, that was never completed. The document dates to 1900 or so.
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