My mother had a Singer treadle and I was making doll clothes on it when I was about 7. I made my first dress at age 12 at my grandma's but hers was electric. She had her Singer treadle converted in the early 50's. During home ec in high school, all of my sewing projects were done on the treadle machine. Just looking at pictures, I think it was a 27.
Mom had that treadle until Grandma gave her the electric one. Mom was not a sewer, just a mender. Don't know what happened to the treadle. I would give anything to have it now. We sold the electric one when Mom died, but regret it.
Now I'm looking for them. DH complains but I told him that when I have more sewing machines than he has lawn mowers, then he can complain. LOL