- The Gulfstream IV can fly 5,000 statute miles nonstop.
- Researching and documenting the evolution of the Woodward Governor Company.
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- Page 6.
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- History of the Lionel Company. Page 1.
- History of the Lionel Company.
- American Heritage.com.
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- A Woodward Prime Mover Control history project.
- A Prime Mover Control history project.