An earlier post was looking for a company to resleeve brake cylinders. I have used the following company who I found to be fast and cost effective:

Brake & Equipment Wharehouse
455 harrison St NE
Minneapolis, MN 55413
800-233-4053
www.brakeplace.com

If you subscribe to Auto Restorer, see the September 2003 issue for a step-by-step article on how brakes are resleeved by this company.

http://www.stovebolt.com/gallery/wheelock_greg_1937.html