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).
Temperature readings for a Streamlined Bentley fitted with a thermostat and radiator grille.
| Identifier | ExFiles\Box 90\1\ Scan101 | |
| Date | 1st July 1934 | |
| +261 To Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/FD.{Frank Dodd - Bodies}1/KW6.7.34. Streamlined Bentley. The following temperatures were taken on the above car, fitted with R.R. Thermostat and radiator grille. Temp. at Dashboard rear of petrol pumps - 43°C. Carb. intake temp. 43 ° Air temperature 25 ° Hs{Lord Ernest Hives - Chair}/F.Dodd. | ||