I'm on a mailing list called GLBT-knit (at queernet). I asked them for suggestions for plain-color wool yarn raised and produced in the US and Canada and dyed in a variety of colors.
I got many suggestions and also other related suggestions for undyed yarn, non-wool yarn, roving, progressive yarn companies, and web-search sites for local products.
Here's a summary of what list members suggested and what I found on my own. More suggestions welcome.
DYED WOOL YARN( Collapse )