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).
Numbered list of vehicle component features and improvements.
| Identifier | ExFiles\Box 178\2\ img143 | |
| Date | 4th April 1934 | |
| -2- Hs{Lord Ernest Hives - Chair}/Ru.1/KW.4.4.34. (11) Graphite block clutch thrust. (12) Marles steering. (13) Radiator cowl improving efficiency 10%. (14) Thermostat bye pass type of temperature control. (15) Automatic carburetter choke for starting. Hs{Lord Ernest Hives - Chair}/Em. | ||