| RefNo | MD7844 |
| Alternative Reference number | 2005/126 |
| Title | Unidentified Optical/Mechanical Engineering Firm |
| Description | Negatives on 35mm film of photographs of optical/mechanical engineering equipment and activities, perhaps for publicity material |
| Date | [Mid 20th cent] |
| Extent | 1 roll of negatives |
| AccessStatus | Open |
| Level | Collection |