Bennett gave you good information about sources. Whites are great machines! They don't fit into Singer cabinets, but the White cabinets are truly outstanding. I have the White Family Rotary electric my grandmother bought in the late '40s for the princely sum of $149! That's equivalent to almost $1500 today. Wonderful machine. I also have some White treadle heads that we picked up for free to play with. They're still on the shelf, but I hope to get to them in the next year or so.
Pam