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 that Marles steering has never been fitted to a production Bentley car.
| Identifier | ExFiles\Box 87\5\ scan0204 | |
| Date | 18th June 1936 | |
| To Sg.{Arthur F. Sidgreaves - MD} from Rm.{William Robotham - Chief Engineer} X 250 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}2/KW.18.6.36. 4¼ Litre Bentley. Replying to Sg.{Arthur F. Sidgreaves - MD}5/E.17.6.36. No Marles steering has ever been fitted to a production Bentley car. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||