- The Woodward Governor Company's Hydro market share before they sold out (Hydro) to the General Electric Company.
- WOODWARD 505 H MAINTENANCE MANUAL 14062A
- WOODWARD NET HEAD GATE CONTROL FOR REVERSIBLE PUMP TURBINES.
- WOODWARD 505H OPERATION MANUAL 14061B
- MANUAL 09029 PAGE 11.
- MANUAL 09029 PAGE 2.
- History of the Woodward 505 series digital governor control system.
- WOODWARD BULLETIN 18005A. THE 505 SERIES CONTROL HISTORY.
- MANUAL 09029 PAGE 6.
- MANUAL 09029 PAGE 7.
- A Hoover Dam history project.
- MANUAL 09029 PAGE 9.
- Having fun touring the Hoover Dam.
- From the oldwoodward.com archives.
- MANUAL 09029 PAGE 10.