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).
Internal request to make 8 damper casing castings from Armstrong's patterns.
| Identifier | ExFiles\Box 152\1\ scan0315 | |
| Date | 8th May 1937 | |
| To HPS. {Horace Percy Smith - Experimental Factory Mgr} from Rm {William Robotham - Chief Engineer} /Les. 1293 Rm {William Robotham - Chief Engineer} /Les.1/AP.8.5.37 ARMSTRONG DAMPERS. Will you please make 8 damper casing castings from Armstrong's patterns in RR.50 material. Rm {William Robotham - Chief Engineer} /Les. | ||