- Amos Woodward's small machine shop in Rockford, Illinois.
- First Woodward Water Wheel Governor.
- Only know photogragh of the first Woodward Governor type made.
- An 1882 catalogue showing the Amos Woodward Water Wheel Governor.
- Patent model picture 4.
- Patent model picture 3.
- Patent model picture 2.
- Patent model picture 1.
- Patent 103,813, circa 1870.
- 9.
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- 4