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).
Confirming the preference for a 4¼ litre chassis over a 3½ litre one due to scarcity.
| Identifier | ExFiles\Box 88\2\ scan0289 | |
| Date | 30th November 1940 | |
| w/s. To C. Rm.{William Robotham - Chief Engineer}2/SW.30.11.40. 260 Thank you for your memo C.5/C.29.11.40, We have now decided that, since 3½ litres is scarce, we can work on 4¼ litre, and actually prefer one of these chassis, if you can get hold of one of them. Rm.{William Robotham - Chief Engineer} | ||