| Year | 1919 |
| Date | 10-Jul |
| Volume | 41 |
| Issue | 950 |
| Page | 42 |
| Category | Electrical |
| Part | |
| Title | The Electrical Transmission of Photographs |
| Author | Marcus J.Martin |
| Notes | 3. The Electrograph. Enlarged section of an image taken up by cross screen, diagram of machine used for receiving or transmitting, electrically-operated pen at the receiving station |