What kind of revolver?
Ok, off the top of my head I don't know of any such place but I'll look around.
http://stores.ebay.com/SidneyRyanEngravingScrimshawArtist
He's got Texas flag grips for a 1911 and he has revolver grips. Can't hurt to contact him, I'll keep looking. As a fellow revolver fan, I'm happy to help as long as you post pictures once you install them.
Well damn! I contacted him and he can't help me. I can't find these things anywhere.