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).
Concluding memo noting the good condition and lower cost of the S.65 valves.
| Identifier | ExFiles\Box 88\4\ scan0202 | |
| Date | 25th February 1937 | |
| - 2 - HPS{Horace Percy Smith - Experimental Factory Mgr}/RH.{R. Hollingworth}1/VS.{J. Vickers}25.2.37. In conclusion, it is interesting to note the good condition of the S.65 valves as these cost considerably less than the others. R.{Sir Henry Royce} Hollingworth. | ||