Here's a brief list of suppliers.
Jill Gully offers a beautiful selection of merino wools and gorgeous silks. A great site! Outback Fibers
Here's the place to find # 36 felting needles that I use. A wonderful source for dollmaking supplies and patterns. Dollmakers Journey Supplies
This is good a source for stuffing wool. It's also a marvelous site for childhood treasures Magic Cabin search for "wool"