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).
The standardisation of parts for 20 HP and 40/50 HP Cars.
| Identifier | ExFiles\Box 74\4\ scan0108 | |
| Date | 2nd February 1924 guessed | |
| 143 contd:- -2- We are standardising them immediately both on the 20 HP. and 40/50 HP. Cars. Yours sincerely, | ||