I saw a treadle with a chain in the little thrift store here in town. It has been sitting in there for oh...about a month or so. The cabinet is almost completely rotted and the machine is in terrible shape. I don't know anything about them at all or I would buy it just to play with it....
Yours is absolutely gorgeous! I've never seen a cabinet like that although I have seen the drawers numerous times. You are a lucky girl!