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).
Cover page for a section on the coil.
| Identifier | ExFiles\Box 47\4\ Scan056 | |
| Date | 14th July 1923 guessed | |
| COIL _ | ||