Re: June 25 color demo
That is the day I went to work for CBS Radio and remember well being given a tour of the facilities, including studio 21.
It was there that a number of manufacturers had set up their prototype receivers. I do not recall lingering but do remember Frank Knight giving a spiel for LONGINES who was one of our sponsors. Remember the Longines Wittnauer Synphonette and Choraliers?
How time flies when you are having fun! And the pictures were super.