Bob... There is an article I wrote about Ateliers de la Rive's products, including Super Vitus tubing sets, on the Classicrendezvous France pages. There is also a photo of the full framebuilders set ie tubes, lugs, drop-outs bridges etc at:-
http://www.flickr.com/
The tubing was around in 1976 or thereabouts..but somewhere I have a copy of the French magazine Le Cycle that includes an article about the launch of the tubeset.
I will go away and do my homework. Hopefully there will be more detail later.
Norris Lockley...Settle Uk