Graham Forsdyke is a well respected expert on Featherweights. His website is:
http://singer-featherweight.com/.
He frequently contributes to the Featherweight Yahoo group and may be a moderator there. That forum is a great resource. Mr. Forsdyke restores Featherweights and is knowledgeable about the parts. He never seems to mind answering questions and helping people. I think April1930s.com is a fun site if you are looking for FW attachments and pictures of them in action.
Enjoy your FW!
Dayle