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).
Telegram reporting a dynamo failure and battery issues.
| Identifier | ExFiles\Box 51\1\ Scan066 | |
| Date | 2nd May 1922 | |
| Roycar Derb angleterre Dynamo urgent Battery run down charging facilities very difficult new Battery unobtainable Waldron | ||