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).
Request to remove old horns and fit new Lucas WT11X type horns to chassis 37 Ex.
| Identifier | ExFiles\Box 166\9\ img046 | |
| Date | 3rd February 1937 | |
| 6066 HPS{Horace Percy Smith - Experimental Factory Mgr}/CEP. from Rm{William Robotham - Chief Engineer}/Wst. Rm{William Robotham - Chief Engineer}/Wst.24/3.2.37. Lucas Horns for Chassis 37 Ex. Will you please have the horns and brackets removed from 37 Ex, and a pair of the latest WT11X type fitted. We have the new horns ready for fitting. Rm{William Robotham - Chief Engineer}/Wst. | ||