Smoke & Fire - Colonial and War of 1812 Clothing, Patterns, Books and Camp Gear
Bethlehem Trading Post - Family business selling clothing for reenactors of the 17th century and 18th century.
Avalon Forge - Still another great source for reenactors.
Jas. Townsend & Son - Mail order catalog which is good for certain items or in limited purchase time, but please note that not all items are historically accurate to New England.
La Couturière Parisienne - Great resource for pictures and patterns of period clothing from the Middle Ages through the 20th century.