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).
Typed list of vehicle improvements and part numbers.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page249 | |
| Date | 29th December 1932 | |
| - 4 - E.1/HP.29.12.32. Improved Petrol Pipe - 1. Improved Road Wing Fixing - 25. Slower Speed Fan Drive - 24. Exhaust silencer - 5. Starter Motor Armature D.100427. Improved instrument Patch to instructions By/RD.2/W.22.11.32. | ||