Analog TV signing off

On Friday, a bunch of TV stations around the US had to turn off their analog switches because the nation is becoming digital. Here's an interesting signoff: they got the original engineer, the guy who switched the TV station on when it was just starting out in the late 1940's, to come back to turn the station off (in its analog form, of course). He's 99, so it's quite a historical moment.

Also--I found a site with images of TV's from the 1940's.