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 regarding a lightweight 20 HP chassis and modifications to the vertical louvres and front axle control.
| Identifier | ExFiles\Box 66\4\ scan0351 | |
| Date | 28th January 1927 guessed | |
| contd :- -2- It will be understood that this chassis is light compared with other 20 HP. chassis used for similar purposes. The vertical louvres will be ready, and there may be some modification to the front axle control. R.{Sir Henry Royce} | ||