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).
Requesting a performance report on a P & R Battery Type BDE.13 fitted to a School Car.
| Identifier | ExFiles\Box 38\5\ Scan118 | |
| Date | 10th August 1921 | |
| X 3398 To Hr. from EFC. EFC4/T10.8.21. X.3398 - P & R BATTERY TYPE BDE.13. We shall be glad at this point, in view of the remarks made at yesterday's conference, to have a further report from you as to the performance of this battery on your School Car. EFC. | ||