- The latest vintage Woodward governor added to the oldwoodward.com collection.
- The flyweight assembly of the turboprop over-speed governor.
- Schematic drawing showing the turboprop over-speed governor.
- American Machinist from 1923.
- 9
- A machine shop manufacturing advertisement from 1923.
- 6
- A metal-working trades article from 1923. Page 1.
- 87. INGERSOLL MILLING COMPANY
- 92
- 93
- 89. THE BARNS SWING DRILL
- 91. FREEPORT
- 40
- Cutting metals. Page 3.