If you live in California or planning a trip to LA later this year, you may be interested in what seems to be a fascinating exhibition run by the Science and Technology Council. As they say on their website:

The Council’s exhibition entitled “In Synch: The Birth of Vitaphone” tells the remarkable story of the Vitaphone Corporation by showcasing the people, the inventions and the impact of this revolutionary technology. It features an original lathe used for cutting Vitaphone wax records; a projector turntable; original wax, metal and plastic discs; and a special keepsake of Jack Warner’s – the original sound-mixing panel from The Jazz Singer.

It runs until December 2006. If anyone visits the exhibit and is allowed to take a picture of the mixing desk that George Groves used in 1927, I'd really appreciate a copy for this web site.