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 for design modification.
| Identifier | ExFiles\Box 14\5\ Scan129 | |
| Date | 21th June 1929 | |
| ROLLS-ROYCE LIMITED. PRINT ROOM. 21 JUN 1929. DERBY. SHOULD BE SPIGOTED. THESE SCREWS ARE NO GOOD. oy from Rm.{William Robotham - Chief Engineer} 21/7/29 | ||