For Quiltncowgirl:
http://www.221parts.com
http://www.featherweight221.com
http://www.april1930s.com
Here are three sites I have dealt with for my Featherweight information and parts. They are in the States and have provided good service to me.
And here's a blog with more links for you to visit. I hope this helps.
http://singerfeatherweight221links.blogspot.com/