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).
Test results for vehicle temperatures with specific dashboard, ventilator, and window configurations.
| Identifier | ExFiles\Box 75\4\ scan0119 | |
| Date | 1st July 1912 guessed | |
| 15 5. Dahboard filled in, louvred side guards dashboard ventilators closed, side windows closed, front windows open. Temp Floorbds. Body Temp. Water temp. Time under full power. Air temp. 34 18 70 8 1/2 20 38 20 Boil. mins 20 No smell, back draught. Gould. | ||