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- THE JAMES LEFFEL & COMPANY HISTORY PROJECT.
- THE JAMES LEFFEL & COMPANY HISTORY PROJECT.
- Published by the James Leffel & Company.
- PAGE 1. PRINTED IN 1887 BY THE JAMES LEFFEL & COMPANY.
- Leffels' Improved Turbine Water Wheel advertisement from June 1887. Page 6.
- JUNE 1887. PAGE 2.
- JUNE 1887. PAGE 9.
- JAMES LEFFEL & COMPANY, CIRCA 1888.
- An 1886 advertisement showing a Woodward Standard size 3 water wheel governor connected to a Leffel turbine.
- Amos Woodward's smallest water wheel governor manufactured.
- A Vintage machine shop manufacturing history project.
- A hydroelectric power plant history project.
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- 7. Barns Tool Grinder Rockford. 1887 ad.
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