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).
Blueprint of a mechanical component with handwritten annotations suggesting modifications.
| Identifier | ExFiles\Box 14\8\ Scan156 | |
| Date | 21th June 1929 | |
| Stamped Text: PRINT ROOM 21 JUN 1929 DERBY. Handwritten Text: SHOULD BE SPIGOTTED. THESE SCREWS ARE NO GOOD. cy from RM{William Robotham - Chief Engineer} 21/7/29. | ||