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).
Note referencing further correspondence regarding a 20 HP electrical system.
| Identifier | ExFiles\Box 51\2\ Scan211 | |
| Date | 4th May 1926 guessed | |
| X.4338. For further correspondence re 20 HP. Electrical system, see X.5780. (Gos.III). EFC. {E. Fowler Clarke - Electrical Engineer} | ||