- "Fine machines are the product of fine people".
- Documenting the evolution of the Woodward governor.
- Documenting the evolution of the Woodward governor.
- The two lakeside Johnson properties developed over the years.
- A Vintage American Machine Shop Manufacturing History Project.
- The Engine Room in the Curtiss-Wright Flying Service.
- The Proportional Governor Patent Number 2,474,140.
- The Proportional Governor Control System.
- The Proportional Governor Control System.
- The Proportional Governor Control System.
- The Proportional Governor Control System.
- The Proportional Governor Control System.
- The Proportional Governor Control System.
- The Curtiss-Wright aircraft engine governor in the collection.
- Instruction Manual for Curtiss Electric Propellers.