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- Made in Rockford, Illinois.
- American Machinist, February 1924.
- Drilling Motor Parts on the Rotating Table.
- Drilling Motor Parts on the Rotating Table. 2.
- Drilling Motor Parts on the Rotating Table. 3.
- American Machinist, February 1924. Contents.
- The Business Outlook for 1924.
- Brad's vintage machine shop manufacturing history project.
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