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).
Cover sheet referring to a standardisation sheet.
| Identifier | ExFiles\Box 60\3\ Scan276 | |
| Date | 27th October 1934 guessed | |
| See standardisation sheet X.No.6037 | ||