- At the Heart of the System since 1870
- Woodward Gas Turbine Governor History.
- Woodward Gas Turbine Governor History.
- Right side of schematic drawing of the 404571 series control.
- Middle section of schematic drawing of model number 404571 series governor.
- Left side of schematic diagram of a Woodward jet engine governor.
- Component master list legend for drawing.
- Component master list for theory of operation.
- Schematic diagram of a vintage Woodward jet engine governor.