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 with two microscopic images of a Bentley III Front Coil Spring.
| Identifier | ExFiles\Box 119\1\ scan0100 | |
| Date | 9th May 1938 | |
| ROLLS-ROYCE LABORATORY REPORT: H1/EJW.2/CS.9.5.38. M.1,581/1 x250 M.1,581/2 x250 Bentley III Front Coil Spring. | ||