Just a quick correction, Wootown Brewers is the hombrew club in the Baldwin area, Thirsty Brewer is the name of the shop, The Thirsty Brewer - Make Quality Beer, Wine and Mead at Home
. I'm sure Tom appreciates the plug no matter what you call his place but if you go Googling it, this will help.
Both his shop and MD Homebrew are great places. If you're out in the Frederick area and need supplies, visit Bob at Flying Barrel.