- 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!!!
- MANUAL 07082.
- BULLETIN 09021A FOR DUAL CONTROL.
- Manual number 07086B.