The O.S. Kelly Manufacturing Companymanufactured steam traction engines, cable plowing steam traction engines, portable steam engines (ca 1880's), steel water tanks, and threshers.
      Erie Machine Shop made Steam Rollers in the 1890’s.
Information Sources:
- Norbeck, Jack, Encyclopedia of American Steam Traction Engines, Crestline Publishing Inc, Glen Ellyn, Illinois, Pg. 159