Revolver Specific Training

Not often, but:

http://www.gunsite.com/main/course-offerings/pistol/defensive-revolver/

and

http://www.thunderranchinc.com/courses.html (scroll down).

also (needed to check websites to see if current):

http://www.shootrite.org/courses/Handgun/Handgun.html (scroll down)

Our own Tom Givens:
http://www.rangemaster.com/classes/handgun-classes/defensive-revolver.html

also

http://midwesttraininggroup.net/?page_id=11 (scroll down)

and

http://www.snubtraining.com/courses.html

Clint Smith at Thunder Ranch gives excellent revolver training.

Claude Werner. I've also heard good things about Jim Higginbotham.

Looks like Michael de Bethencourt is running one of his snub classes in AZ this coming weekend:

http://www.snubtraining.com/schedule.html

A bit out of the way for you - but I got a block of revolver instruction from Denny Reichard at a Farnam class a couple years ago, and it was good:

http://www.sandburrgunranch.com/public/courses/default.aspx?courses=Sand Burr

Claude's great. Took his snubby class.

I've taken Claude's class, it was really really good.

Tactical Defense Institute in Ohio:

http://tdiohio.com/snubby-revolver/

I took it a couple of years ago. Good weekend course.