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).
Extract of a letter from Messrs. Peto & Radford regarding the battery on Mr. Royce's chassis 7-EX.
| Identifier | ExFiles\Box 54\5\ Scan107 | |
| Date | 11th December 1926 | |
| X3839 Extract from M/5. 11.12.26. from Messrs. Peto & Radford (X 3711) " With regard to the battery on Mr. Royce's chassis 7-EX, I see that there are some of our cells on this so that will be all right for screwing the special vent into." | ||