Cathy or Pat,
Did you ever meet James W. Slaten the author of Antique American Sewing Machines, A Value Guide? I understand he had a Singer Sewing Museum in Oakland. Last bit of info I could find on him was from 2008. Is this guy still alive?
Do either of you own his book?
I have no idea how I came across this dude. Sometimes I get lost looking for info on the internet only to find other interesting items.