The lady I got the Winselmann from said that there was a treadle base in her garage., Her mom was the only one who sewed, and only had the Winselmann before getting an electric machine.
As best I can tell, this -used- to be a treadle... and the closest I've come to identifying it is maybe a Davis / Minnesota? (Based on this picture, irons only, not the wood top http://www.flickr.com/photos/majesti...ce/2284104508/)
Is it worth grabbing from her, if she doesn't want an arm and a leg for it? I know it needs a lot of work... if nothing else, it can help someone else out who may need something off it?