Steve Hunter and Dick Wagner.
They are probably most noted for their stint with Alice Cooper but they have a huge catalog of work. My favorite thing they did was the intro to Sweet Jane on Lou Reed's Rock and Roll Animal.
Here's a quote:
I’ve heard a lot about the Aerosmith experience too - you played on “Train Kept a Rollin,” right?
"I was living in New York and I got a call to come into the studio to play some guitar on Aerosmith. I went over and played on three or four tracks. Steve Hunter came over also. We both played on that song beecause Joe Perry…I don’t know why - I guess we were better guitar players at the time - Joe is really good. We were basically studio players for hire. That was their breakout album: Get Your Wings. We didn’t get credit on that album either. Later on, it got out."
From:
http://web.archive.org/web/200306040...ssageboard.htm
I'll have another question in a few minutes.