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).
Suitability of a material with .04% carbon for drawn pressing, page 2.
| Identifier | ExFiles\Box 38\6\ Scan051 | |
| Date | 1st January 1919 guessed | |
| - 2 - about .04% carbon, which seems quite suitable for this type of drawn pressing. OY. (SIGNED) M.{Mr Moon / Mr Moore} Olley. | ||