| Year | 1916 |
| Date | 08-Jun |
| Volume | 34 |
| Issue | 789 |
| Page | 390 |
| Category | Electrical |
| Part | 2 |
| Title | The Principles of Modern Printing Telegraphy |
| Author | H.H.Harrison |
| Notes | Translator for five-unit code, early Baudot translator, permutation bar & disc translators (Baudot), method of applying permutation bars, Steiger's permutation disc translator, Murray's permutation-bar typewriter printer |