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).
Page two of a memo discussing the results of a new material for slipper drives and the need for further testing.
| Identifier | ExFiles\Box 65\4\ scan0248 | |
| Date | 16th January 1933 guessed | |
| (2) owner so that if any variation from its present state occurs we shall know of it and be able to report to you. The whole result is considered to be most satisfactory and it now remains to complete the necessary tests of this new material for slipper drives as soon as possible so that a decision may quickly be made regarding its use for standard production. .Cudl. CWB. | ||