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 temperature and performance with a filled-in dashboard, closed ventilators, and open windows.
| Identifier | ExFiles\Box 75\4\ scan0116 | |
| Date | 1st July 1912 guessed | |
| 12 2. Dashboard filled in, louvred side guards, dashboard ventilators closed, all side windows open. Temp Floorbds. Body Temp. Water temp. Time under full power. Air temp. 34 25 70 9 1/2 18 41 31 1/2 Boil mins 18 No smell, bad draught. | ||