Are you familiar with Harriet Hargrave? She has a shop near Denver. I have no idea what the store is like, but I would love to take a class from her. I have benefited from her books.
Here's her info:
Harriet's Treadle Arts (Just outside of Denver)
Store Hours -
10 am - 5 pm Mon, Tue, Thurs, Fri; 10 am - 6 pm Wed; 10 am - 4 pm Sat
You'll find the shop just south of I-70 between Sheridan and Wadsworth at:
6390 W. 44th Avenue., Wheat Ridge, CO 80033.
(303) 424-2742.