- American Machinist manufacturing history project.
- American Machinist manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- ROCKFORD MILLING MACHINE COMPANY.
- THE INGERSOL MILLING MACHINE COMPANY.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.
- Vintage machine shop manufacturing history project.