(UPDATE: Disc image found!)
Chris Nova from Mac OS 9 Lives has put out a call for a certain Software Install & Restore disc. This one's very rare, an 8.6 one specific to the Sawtooth AGP (not Yikes). Apparently they were bundled with Sawtooths only for a couple of months back in 1999, and not one has made its way onto Macintosh Garden or any other Mac archive site.
Here's a Mac OS 9 Lives forum link to the thread where Chris lays out the full details. If you can report a sighting of one of these rare birds, click on over and drop Chris a line. :)