- APPLETON WISCONSIN HISTORY.
- A Woodward Governor Company advertisement from 1919.
- A Wisconsin history project.
- A 1919 advertisement from the collection.
- Niagara Falls Hydraulic Power and Manufacturing Company. 7.
- Niagara Falls Hydraulic Power and Manufacturing Company. 6.
- Niagara Falls Hydraulic Power and Manufacturing Company. 5.
- Niagara Falls Hydraulic Power and Manufacturing Company. 4.
- Niagara Falls Hydraulic Power and Manufacturing Company. 3.
- Niagara Falls Hydraulic Power and Manufacturing Company. 2.
- Niagara Falls Hydraulic Power and Manufacturing Company. 1.
- Niagara Falls Hydraulic Power and Manufacturing Company.