From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Photograph of a paper tape recording instrument or telegraph machine.
| Identifier | ExFiles\Box 138\2\ scan0021 | |
| Date | 18th March 1924 guessed | |
| 44630 | ||