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 detailing official speed figures recorded at the Montlhery circuit.
| Identifier | ExFiles\Box 160\3\ scan0194 | |
| Date | 14th February 1939 | |
| ROYCAR DERBY = ROBOTHAM OFFICIAL ACE FIGURES AT MONTHERY FOR ONE HOUR FLYING START HUNDRED AND SEVEN POINT FORTY TWO MPH STOP BEST LAP DURING HOUR HUNDRED AND NINE POINT TWO STOP BEST LAP EVER OFFICIAL TIMING HUNDRED AND TEN POINT NOUGHT FORTY THREE = SLEATOR | ||