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: 203
| Images on film h1/co/A0390H/0731 | United Gas Improvement Company |
| Location | United States (North America) |
| GND | 271081-X |
| Signature | E15 U 6 |
| URI | https://pm20.zbw.eu/folder/co/074582 |
| ID | co/074582 |