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).
Secret memorandum discussing production priorities for EAC.IV and EAC.II components.
| Identifier | ExFiles\Box 66\4\ scan0163 | |
| Date | 1st January 1924 | |
| SECRET. CJ27/E22/1/24 - 2 - box with the large reduction servo contemplated under EAC.IV. Only such surplus energy as cannot be employed helpfully on the two items above referred to should be devoted to the production in small numbers of EAC.II. CJ. COPY | ||