Interested in finding Historic Clothing for mid 1800's, then try these links:
Sutlers

River Junction Trade Co.
Manufacturers and Dealers in 19th Century Dry Goods

 James Country:
For patterns, men's work shirts, pants, frock coat, sack suits.

 Gentleman's Emporium
Ready made limited fabric selection.

 Quarter Master Shop
Ready made, good fabric selection.

 Elizabeth Stewart Clark
Great Site

 Ladies Parlor
Great Site

 Abrahams Lady
Great Site

 Dirty Billys Hats
Best Hat Selection

 Fugawee
Shoes

 Blockade Runner
Shoes