It's the knitting convention that they won't call a convention so as to piss off those of us who like to talk plain.
June 6-10, Columbus, OH
http://knittersconnection.com
Teachers include: Cat Bordhi, Gwen Bortner, Gail Alsdorf and Jacki Vance-Kuss, Judy Ditmore, Maureen Mason Jamieson, Galina A. Khmeleva, Ruth Lantz, Sally Melville, Shannon Okey, Judy Pascale, Iris Shreier, Candace Eisner Strick
Prices range from about $85 (3 hours of classes) - $470 (the whole shebang not including hotel), and of course there is a nominal fee to join Knitter's Connection if you aren't already a member.
(Don't you love it? They make you pay for the privilage of being added to their mailing list when maybe you just wanted to take a damn class and be left the hell alone.)
Early Birds who register before March 19 get a small discount.
Anyhoo, I've found lots of references to it (CYC), but no actual mention of such a monster. ...Ohio is a bit off of my beaten track.