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).
Urgent telegram requesting 48 turned compression rings with a 3 1/2' diameter.
| Identifier | ExFiles\Box 87\2\ scan0213 | |
| Date | 11th July 1936 | |
| X236 11.7.36. NAPOLEONIC, SOWEST, LONDON. URGENTLY REQUIRE 48 TURNED COMPRESSION RINGS 3 1/2" DIAMETER. ROBOTHAM, ROYCAR. | ||