She looks in very good shape. I have a Treadle from my Grandmother that looks similar. Mine is a No. 15-30 and the instruction book is dated 1913. There used to be a "treadle on" group on the Internet. I hope to use mine someday but never seem to find the time. When I got the machine from a cousin it was frozen - someone had put too much oil on it and stored it away. My grandson got it going for me about 10 years ago. You can probably find the instruction book for your particular machine on the Internet. It if happens to be a No. 15 - 30 I will send you a copy of my book. Good luck and happy sewing. Just send me a PM if I can be of help.