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).
Costs of a B.50 Semi-Floating Rear Axle.
| Identifier | ExFiles\Box 148\2\ scan0005 | |
| Date | 10th October 1938 | |
| 1260. Rm{William Robotham - Chief Engineer}- Da.{Bernard Day - Chassis Design}6/G.10.10.38 B.50 Semi-Floating Rear Axle - Re costs. in file 802. | ||