The J.M. Ross, Sons & Co. Ltd. was located in St. Catharines, Ontario, Canada. They started manufacturing around 1890. This company was know to have manufactured the Cornell steam traction engine and the New American three-way crank separator.
Information Sources:
- Norbeck, Jack, Encyclopedia of American Steam Traction Engines, Crestline Publishing Inc, Glen Ellyn, Illinois, pg. 107
- Steam Power on the American Farm by Reynold M. Wik, 1953 page 253