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).
Instructions for fitting a Lucas Alto Horn type HF.43 No.53 to chassis 20-EX for testing.
| Identifier | ExFiles\Box 59\3\ Scan118 | |
| Date | 6th July 1931 | |
| X6032 RHC.{R. H. Coverley - Production Engineer} from Hs{Lord Ernest Hives - Chair}/HEW. c. Hs{Lord Ernest Hives - Chair}/AJL. Hs{Lord Ernest Hives - Chair}/HEW2/AD6.7.31. LUCAS ALTO HORN TYPE HF.{H. W. Frost - Coachwork Inspector}43 No.53. Will you please have this horn fitted to chassis 20-EX for test. The present Klaxon support will require changing and a Bosch support bracket fitting to take this Lucas horn. Hs{Lord Ernest Hives - Chair}/HEW. | ||