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 obtain a Lucas high frequency horn, type H.F.722, for chassis 19-EX.
| Identifier | ExFiles\Box 59\3\ Scan151 | |
| Date | 9th March 1932 | |
| X6032 Roy.{Sir Henry Royce} from Hs{Lord Ernest Hives - Chair}/Wst. c. Hs{Lord Ernest Hives - Chair}/Lid.{A. J. Lidsey} Hs{Lord Ernest Hives - Chair}/Wst.4/AD9.3.32. HORN FOR 19-EX. Will you please obtain from Messrs. Lucas another high frequency horn type H.F.722 for use on the above chassis. Hs{Lord Ernest Hives - Chair}/Wst. | ||