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).
Follow-up memo requesting a reply regarding the Sparton S.O.S. De Luxe Horn.
| Identifier | ExFiles\Box 49\5\ Scan136 | |
| Date | 28th May 1929 | |
| X 4278. EFC. {E. Fowler Clarke - Electrical Engineer} ROY {Sir Henry Royce} /MS9/P.28.5.29. SPARTON S.O.S. DE LUXE HORN. Please let us have a reply to our memo ROY {Sir Henry Royce} /MS4/P.23.5.29. with reference to the above. ROY. {Sir Henry Royce} qm | ||