4 links
LA Chapellerie
chapellerie.com
Kangol, flechet , borsalino, stetson, a lot of hats available on this site (french and english languages available).
Miller Hats
millerhats.com
Wide selection of fedoras, western, outback, fur, leather, caps, and berets.
Sacred Feather
sacredfeather.com
Hats and caps from Stetson, Dobbs, Langenberg, Dorfman Pacific and Biltmore.