This wool comes from growers that are on the west coast that are inland 200-300 miles and Eastern Mid west (Montana, Eastern S. Dakota, Western Colorado.....).  Because it is a fine micron being grown in the United Sates, the choices becomes very limited.  Largely due to the fact that most of the United States climate zones are limited, and / or correct knowledge of sheep husbandry, for these breeds are not like other regions of the world.