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- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- Is this Mill still standing? What happened to the Woodward governor?
- Just think of how many hours it took to draw this blueprint drawing back in 1944.
- A James Leffel Water Wheel blueprint number 43640, circa 1944.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- THE UNIVERSITY OF MICHIGAN, FOUNDED IN 1817.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- The Upper Peninsula of Michigan. An inventory of historic engineering and industrial sites.
- CONTENTS
- ILLUSTRATIONS
- ILLUSTRATIONS. 2.
- ILLUSTRATIONS. 3.