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 the 'Battery' section.
| Identifier | ExFiles\Box 46\3\ Scan010 | |
| Date | 6th January 1921 guessed | |
| BATTERY | ||