Oh, sorry. They're not new discs by any means, so maybe you hadn't heard of them before. Those are the usernames of the guys that made the discs (they're supplements to laserdisc rips). Both are/were OT.com members.

The source is the official VHS tape "From Star Wars to Jedi: The Making of a Saga." I actually have two copies of it; one from 1989 (got it for $2 at Value Village a few weeks ago) and one from 1992 (Corn Pops mail-in offer coinciding with the Timothy Zahn trilogy hype, I believe it was).