Does anyone know anything about Lee Erwin?

He’s a organist who who wrote music for silent films back in the day. I think he wrote a lot of accompanying scores to D.W. Griffith’s films in particular.

In college I picked up a copy of Griffith’s Intolerance from my public library, and it was accompanied by some really nice organ music. I know that the music used as scores to silent films varies by whoever is distributing it, and thus that the music I heard might not have been by Lee Erwin, or that Erwin might not have written for Intolerance at all, but I thought it was worth a shot.

Help a crazy movie lover, guys. This has been bugging me for about six years, maybe. Believe it or not.