Hi, Marc. I didn't participate in any of it, no, sad to say. But if you ask around the history board on Getbig, you will probably find some valuable information. The board is moderated by funk51, and he is one of several people that know their who-is-who in this area.
Guys like Robby Robinson, for instance, are still going strong and have web presence with contact info, etc. (he's the subject of regular update threads on this site, in fact)
BTW: If you get a few minutes in the future, please mention some documentary titles you've worked on.