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- Rockford, Illinois railroad history.
- DE LAVAL STEAM TURBINE COMPANY
- CIRCA 1894.
- DE LAVAL STEAM TURBINE COMPANY
- DE LAVAL STEAM TURBINE COMPANY FACTORY.
- Vintage machine shop manufacturing history project.
- DE LAVAL STEAM TURBINE COMPANY HISTORY.
- The Steam Turbine.
- Vintage manufacturing history project.
- DE LAVAL STEAM TURBINE COMPANY HISTORY.
- Page 8.
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