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).
The production and testing schedule for 'N' Series cars, specifically concerning large tyres and Marles steering.
| Identifier | ExFiles\Box 146\1\ scan0172 | |
| Date | 20th January 1938 | |
| 1245. W/P. Sr. from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}6/R.24.1.38. Sr/Crnl/20.1.38. The large tyres and Marles steering come on production the car in 'N' Series, which goes to test on March 26th. Rm.{William Robotham - Chief Engineer} | ||