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: 5
| Images on film h1/co/A0348H/1081 | New Jersey Bell Telephone Company |
| Signature | E15 B 55 b2/5 |
| URI | https://pm20.zbw.eu/folder/co/098404 |
| ID | co/098404 |