Re:A PDP-11 emulator in the browser running Unix V6
by kps on Monday December 25, 2017 @03:34PM
(#16005584)
Western Electric was Bell's manufacturing division, and they had machines running Unix earlier, e.g. https://en.wikipedia.org/wiki/3B_series_computers
http://tech-insider.org/unix/research/1983/0517.html