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 incorrect Wind Tone Horns fitted to car 35-EX and the arrangement to send a modified pair.
| Identifier | ExFiles\Box 92\3\ scan0113 | |
| Date | 22th February 1937 | |
| 300a. W/S. Cx.{Major Len W. Cox - Advertising Manager} from Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} Rm{William Robotham - Chief Engineer}/Gry{Shadwell Grylls}8/R.22.2.37. WIND TONE HORNS. With regard to your telephone conversation, I find that 35-EX is not fitted with the latest type of horn. Apart from the one set on Sg{Arthur F. Sidgreaves - MD}'s car, we did not receive a second set until after the car had left for France. We are making arrangements to send to GWH.{George W. Hancock - Head Chateauroux} a modified pair as soon as possible. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} | ||