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).
Laboratory report on the decarburised surface of a Phantom III front suspension coil spring.
| Identifier | ExFiles\Box 95\2\ scan0261 | |
| Date | 2nd June 1938 | |
| ROLLS-ROYCE LABORATORY REPORT: HL/LJW.1/SK.2.6.38. M.1817/1 x 250 Decarburised Surface of Phantom III Front Suspension Coil Spring, G.24612, run satisfactorily for 100 hours. | ||