I had a little time to kill before my flight to LA today, so I was finally able to stroll through the early audio exhibit in the United concourse at SFO (on the way to gates 76-90). Lots of interesting historic items including this first videotape recorder. When Apmex showed this to television executives in 1956 they gave it a standing ovation.
The exhibit is Dolby heavy - practically everything is on loan from Dolby Labs, including the Ampex. Ray Dolby was on the team that invented it - but well worth the 20 minute stroll.