Alpine Games - Self Published
The New Homebrew is missing, it is a winter Olympic games game.
Mortal Kombat II - Atari
has been found, only the code was found on an old PC and released to the public on rom format but at least a rumor mill or proto listing should be there.
Guardians - Telegames
Was in development as an RPG but only about 30 percent finished and only a set of Eproms exist.
This info is from Atari Times
Joe if you see this, I'd be interested in taking over the Lynx section and trying to complete it, it would be a slow process but I could at least get the ball rolling.