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).
Note regarding Hydraulic Front Brakes for B.III, 13.5'o and Wraith 80 models.
| Identifier | ExFiles\Box 98\3\ scan0046 | |
| Date | 19th September 1938 | |
| Rm.{William Robotham - Chief Engineer} 406. Da.{Bernard Day - Chassis Design} 4/G.19.9.38. Hydraulic Front Brakes - B.III, 13.5'o and Wraith 80 in file 1029. | ||