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).
Official order for Neoprene and white diaphragms.
| Identifier | ExFiles\Box 149\3\ scan0081 | |
| Date | 4th July 1939 | |
| 1263. To Les.{Ivan A. Leslie} c. to Les/AW. c. to G/Mt. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems}12/JH.4.7.39. Will you please issue an official order for 2 Neoprene and 2 white diaphragms as per attached sheet. These should be F.O.C. O/N.52439. Rm{William Robotham - Chief Engineer}/JBD.{John B. Dixon - Fuel Systems} | ||