- WOODWARD HORIZONTAL TYPE WATER WHEEL GOVERNOR IN APPLETON WISCONSIN, INSTALLED IN 1909.
- Letter to Woodward Governor Company for a size 3 Water Wheel Governor, circa 1913.
- SCIENCE ABSTRACTS, CIRCA 1908.
- WATER WHEEL GOVERNOR HISTORY.
- JAMES LEFFEL & COMPANY ADVERTISEMENT.
- WOODWARD HORIZONTAL WATER WHEEL GOVERNOR.
- The Woodward Governor Company had a long relationship with the James Leffel Company making hundreds of governors for thieir turbine water wheels.
- A WOODWARD FRICTION WATER WHEEL GOVERNOR THEORY OF OPERATION ARTICLE, CIRCA 1903.
- The James Leffel Company purchase order to the Woodward Governor Company.
- WOODWARD FRICTION WATER WHEEL GOVERNOR FROM PATENT NUMBER 103,813.
- DATA FOR ORDERING TURBINE GOVERNOR FROM THE ARCHIVES.
- DATA FOR ORDERING TURBINE GOVERNOR PAGE 2. WE LOVE HISTORY!!!
- WOODWARD HORIZONTAL TYPE WATER WHEEL GOVERNOR IN APPLETON WISCONSIN, INSTALLED IN 1909.
- THE WOODWARD WAY. A HISTORY OF THE WOODWARD GOVERNOR COMPANY. ROCKFORD, ILLINOIS U.S.A. 1870-1995.
- WOODWARD GOVERNOR COMPANY CATALOGUE FROM THEIR FACTORY AT 658-660 RACE STREET, CIRCA 1908.