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).
Cover note confirming a conversation and accompanying a sketch showing the space required for a silence chamber.
| Identifier | ExFiles\Box 155\3\ scan0032 | |
| Date | 4th October 1935 | |
| X1325 Sft.{Mr Swift} From Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}14/MA.4.10.35. Confirming our conversation, herewith sketch showing the space we require for the silence chamber. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||