It is fantastic to know the show exists in its entirety and is now available on DVD!!!
I have an excerpt of the Silent Show from a copy of NBC's 50th Anniversary special from 1976 and I have uploaded it to YouTube a while back
http://www.youtube.com/watch?v=lEBg6ansaJA . I will have to sometime soon order me a copy of that box set when I can budget for it, at the moment I have ordered the NBC Shirley Temple Show box set so I am looking forward to that!
I also read up about the lenticular colour film process in the Steve Hoffman forums link given, very interesting. It's a pity that there's still no known way to transfer them despite the technology we have today. I believe in my own mind that that lenticular telecines can be built again from the original design schematics like with anything else but of course there's the usual money factor and whether people are willing to spend the money on the parts and labour time, but you never know!