| Year | 1907 |
| Date | 05-Dec |
| Volume | 17 |
| Issue | 345 |
| Page | 539 |
| Category | The Latest in Engineering |
| Part | |
| Title | Wireless Telegraphy: The Poulsen System |
| Author | |
| Notes | Transmitting apparatus, De Forest's receiving room, Receiver arranged for reading the signals from a telephone |