I have never been to a brick-and-mortar shop anywhere that was touring oriented. Unfortunately, your best bet is to order gear on-line. You can also support your local bike shop and special order gear, but in my experience that ends up costing a lot more money and taking more time with less selection. Here are some good on-line shops for touring gear:

http://www.thetouringstore.com/
http://www.rivbike.com/
http://www.rei.com/
http://www.adventurecycling.org/