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).
Lap speeds for the Embiricos run at Brooklands race track.
| Identifier | ExFiles\Box 160\4\ scan0109 | |
| Date | 20th July 1939 | |
| 1349. W/P. Sr. from Rm. {William Robotham - Chief Engineer} Rm {William Robotham - Chief Engineer} 20/R.20.7.39. Embiricos Run on Brooklands. A few more details of the hour's run on Brooklands:- Slowest lap 113.71 Fastest " 115.02 10 miles, officially observed laps, as follows:- 114.49 115.02 115.55 115.02 Rm. {William Robotham - Chief Engineer} | ||