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).
Instruction to ensure that B.V. and B.50 bonnets are fitted according to a specific scheme.
| Identifier | ExFiles\Box 99\4\ scan0075 | |
| Date | 10th January 1939 | |
| 440 also 840 To NPS. from Rm{William Robotham - Chief Engineer}/Std. Rm{William Robotham - Chief Engineer}/Std.9/WH.10.1.39. BONNET - B.V. AND B.50. Will you please ensure that any future B.V. or B.50 bonnets fitted up are to scheme FCD.1113 - 3.B.50 should have the scheme fitted. Rm{William Robotham - Chief Engineer}/Std. | ||