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).
The effects of wind on an unfastened bonnet at speed.
| Identifier | ExFiles\Box 96\3\ scan0019 | |
| Date | 19th November 1935 | |
| - 2 - Cx{Major Len W. Cox - Advertising Manager}3/KW19.11.35. if the bonnet had been unfastened by anybody we should have heard it chattering and the sides would have bulged with the wind long before attaining the speed we did. Cx.{Major Len W. Cox - Advertising Manager} LWB | ||