In my younger years I rewound motors and transformers. One of the
larger suppliers of magnet wire and related products was Essex. I
found this site:
http://www.essexgroup.com/Subsidiari...ell/motors.asp

Some outfits may only sell wholesale, but asking around they may lead
you to a local distributor who will sell you what you need.

I have no connection (no pun intended) with this company.
Cheers,
Norman