- A Pelton Water Wheel Company advertisement from 1902.
- The Pelton Water Wheel Company History, circa 1902.
- A Risdon Iron Works advertisement from 1902.
- A Rasdon Tangential Water Wheel advertisment from 1902.
- The Journal of Electricity Power and Gas .
- Selecting Hydraulic Reaction Turbine History Project.
- THE PELTON WATER WHEEL COMPANY ADVERTISEMENT FROM 1903.
- PELTON WATER WHEELS
- PELTON WATER WHEELS 1903.
- ABNER WATER WHEEL COMPANY
- ABNER DOBLE WATER WHEEL COMPANY.
- ABNER DOBLE WATER WHEEL COMPANY. 2.
- THE DESIGN OF TENGENTIAL WATER WHEELS, PAGE 1.
- THE DESIGN OF TENGENTIAL WATER WHEELS PAGE 2.
- THE DESIGN OF TENGENTIAL WATER WHEELS PAGE 3.