You can purchase Western Sky Knits yarn and fiber at the following online and local retailers:

Stix, Bozeman MT
The Knot House, MD 
Do Ewe Knit, NJ
The Yarn Club, VA 

The Loopy Ewe, CO

Eat.sleep.knit , GA

Forever Yarn, Doylestown, PA

The Yarnover Truck, CA

Candy Skein Yarn and Crafts, OR

Pingora Yarns, WY

Colorful Yarns, CO

Woolyn, Brooklyn NY