- The Foote Burt Drilling Machine Company
- What is the Woodward Constitution propaganda?
- A vintage Caterpillar Company advertisement.
- The First 75 Years of the Woodward Governor Company's History.
- One hundred years of the locomotive.
- From the vintage advertisement collection.
- 8
- Marine diesel handbook
- The Woodward Governor Company's Machine Shop.
- All the Gisholt Machine Company buildings are still standing in 2021.
- Constant Speed Drive for Boeing 727, Sundstrand Corporation - Museum of Science and Industry (Chicago) - DSC06323
- INGERSOLL MIILLING MACHINE COMPANY HISTORY.
- CATERPILLAR TRACTORS.
- CATERPILLAR TRACTORS, CIRCA 1922.
- An advertisement from 1925.