The O.S. Kelly Manufacturing Company, founded by Oliver S. Kelly, was located in Springfield, Ohio and was know to have manufactured steam traction engines, cable plowing steam traction engines, steel water tanks, and threshers. This company was also connected with the O.S. Kelly Western Manufacturing Company located in Iowa City, Iowa
Information Sources:
- 1893 Digest of Trade Marks for Machines, Metals, Jewelry, and the Hardware and Allied Trades lists trademarks registered before 1893 to Whiteley, Fassler & Kelly.
- Norbeck, Jack, Encyclopedia of American Steam Traction Engines, Crestline Publishing Inc, Glen Ellyn, Illinois, Pg. 159
- Steam Power on the American Farm by Reynold M. Wik, 1953 page 252
- The Steam Tractor Encyclopedia by John F. Spalding & Robert T. Rhode, 2011 pages 222-233