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Creation date / 2017 / August / 6
- A vintage Water Wheel Manufacturing History Project.
- JAMES LEFFEL LETTERHEAD, CIRCA 1944.
- The Woodward Company and the James Leffel & Company are still in business in the year 2020. History in the making!
- THE JAMES LEFFEL COMPANY, CIRCA 1944.
- The Holy Bible history book.
- Grandpa's notes.
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- POWER PLANT ENGINEERING HISTORY DATA.
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- Grandpa's study book notes.
- STEAM TURBINES AND CONDENCER HISTORY DATA.
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- How does a governor work?
- BIBLE HISTORY TRANSLATED OUT OF THE ORIGINAL TONGUES.
- HEAT AND STEAM HISTORY.