- History of the Lionel Company.
- American Heritage.
- American Heritage.com.
- History of the Lionel Company. Page 1.
- Page 2.
- 2B. History of the Lionel Company.
- Page 3.
- Page 4.
- Page 5.
- Page 6.
- A Model Railroad history project along the way.
- Researching and documenting the evolution of the Woodward Governor Company.
- A Woodward Prime Mover Control history project.
- PMC October 1989.
- Prime Mover Control October 1989.