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).
Listing part number references for the reverse light switch and side steering tube springs.
| Identifier | ExFiles\Box 108\3\ scan0009 | |
| Date | 1st September 1938 | |
| -2- Rm{William Robotham - Chief Engineer}/Crl{C. R. Lisson}/R.1.9.38. Reverse Light. Reverse light switch to DCD.725. Side Steering Tube. Side steering tube springs to SCD.578. Rm{William Robotham - Chief Engineer}/Cr.{Mr Cra???ster / Mr Chichester} | ||