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).
Summary of total mileage for Rationalized cars with independent front suspension, B.V. cars, and various B-series engines.
| Identifier | ExFiles\Box 154a\2\ scan0311 | |
| Date | 17th July 1940 | |
| 1305 Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager}2/JMS.17.7.40. Total mileage of Rationalized cars with independent front suspension... ... 281,101 Total mileage of B.V. cars ... ... 153,098 " " " B.50 " ... ... 39,692 " " " B.80 " ... ... 88,311 " " " B.60 Engines ... ... 36,890 " " " B.80 " ... ... 88,311 Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} [Signature] | ||