- Rockford, Illinois Sanborn fire map.
- THE BARBER-COLMAN COMPANY PROPERTY.
- ROCKFORD, ILLINOIS SANBORN MAP.
- Rockford, Illinois Sanborn Fire Insurance Map Book.
- Rockford, Illinois Sanborn Fire Insurance Map Book.
- Page 13.
- Rockford, Illinois Sanborn map
- Vintage machine shop manufacturing technology history project.
- WOODWARD COMPANY PROPERTY NOTES.
- 8
- 6
- PICKERING GOVERNOR COMPANY
- Marine diesel handbook
- 19
- 20