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).
Fitting of switchboxes for magneto ignition to three specific cars.
| Identifier | ExFiles\Box 45\4\ Scan351 | |
| Date | 1st December 1922 | |
| X. 4081. 1.12.22. X. 4081 - SWITCHBOX FOR MAGNETO IGNITION In accordance with instructions contained in By/Dsl/ML13.10.22, three of the above switchboxes have been fitted to the following cars :- 5 Gos.II 7 Gos.II 6 EX. (40/50). EFC. | ||