- Training in the Irl C. Martin Academy history advertisement, circa 1983.
- Woodward's most powerful speed governing control system. History in the making!
- STURGESS GOVERNOR ADVERTISEMENT
- Woodward... At the Heart of the Energy Control System Since 1870.
- Vintage machine shop manufacturing history project.
- GOVERNORS
- Woodward Company history from the archives.
- Woodwardology on the world wide web.
- Original page from a 1905 catalogue.
- Amos Woodward's new 1889 Water Wheel Governor Catalogues.
- Mr. Repologle with his Repologle hydraulic water wheel relay governor.
- In 2019 found an original 1905 Woodward Water Wheel Governor catalogue.
- THE FIRST WOODWARD COMPANY DOCUMENT PUBLISHED ON THE THEORY OF GOVERNOR SPEED CONTROL.
- WOODWARD GOVERNOR COMPANY DOCUMENT NUMBER 25005A
- Original page from a 1905 catalogue.