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 concerning B.V. Bonnet fasteners, with a cross-reference to file 1026.
| Identifier | ExFiles\Box 98\3\ scan0164 | |
| Date | 4th July 1939 | |
| Les.{Ivan A. Leslie} 405. Rm{William Robotham - Chief Engineer}/Ed.{J. L. Edwards} 6/SH. 4.7.39. B.V. Bonnet fasteners. see file 1026. | ||