For intellectual property law reasons accessible only on the web from the European Union legal area and from the ZBW reading room.
Total number of images: 3
| Images on film h1/co/A0348H/1068 | Northwestern Bell |
| Signature | E15 B 55 b2/1 |
| URI | https://pm20.zbw.eu/folder/co/098401 |
| ID | co/098401 |