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).
Inquiry to Klaxon Ltd. regarding the development progress of a new high-frequency buzzer horn.
| Identifier | ExFiles\Box 59\3\ Scan113 | |
| Date | 1st June 1931 | |
| X6074. Hs{Lord Ernest Hives - Chair}/HEW2/AD. 1st June, 1931. Messrs. Klaxon Ltd. Warwick Rd. Greet, Birmingham. Dear Sirs, We should be pleased to know how your experiments are progressing with high frequency buzzer type horns with a view to producing a horn superior to the foreign model and our present motor type Klaxon. Yours faithfully, FOR ROLLS-ROYCE LIMITED. | ||