I learned to sew on my grandmother's White treadle machine. Then when I was about 23 she GAVE IT AWAY to Mrs. Retzloff who cleaned house for her. My mother and I went to Mrs. Retzloff and begged her to let us have it. Even offered her up to $300 (this in the early 70s). She refused.
Several years ago I found a machine very similar but not a White and bought it!
When my son was born in 1974 I bought an Elna SU. It is has been a great machine. I love it so much that when I found one just like it I grabbed it up so fast. It lives at my friend's house in CA so I can use it when I am there. When I go to retreats I take them both, in case I need a spare! Even loaned it to another friend at retreat when she left the power cord at home! Had the first one rebuilt when the cam shaft gave out. Guess I am just stuck in a rut! Sherrie in NM.