- The Woodward Type "A" Actuator Governor System for 1924.
- The Woodward Governor Company at 240-250 Mill Street in Rockford, Illinois.
- The Woodward Airbleed Type Governor.
- THE PELTON WATER WHEEL COMPANY.
- THE PELTON WATER WHEEL COMPANY.
- THE PELTON WATER WHEEL COMPANY.
- THE PELTON WATER WHEEL COMPANY.
- THE PELTON WATER WHEEL COMPANY.
- THE NATIONAL WATER WHEEL COMPANY.
- The most valuable and complicated Woodward jet engine fuel control governor system in the collection.
- The lastest AiResearch Manufacturing Company's governor added to the "Wall of Governors".
- The desk area.
- The desk area.
- The collection of small aircraft engine governors.
- The Chrysler Turbine Engine.