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 for a photostat copy of a chart detailing the analysis of valve materials.
| Identifier | ExFiles\Box 154a\1\ scan0084 | |
| Date | 1st July 1928 | |
| X1474 BY Hs. {Lord Ernest Hives - Chair} Rg {Mr Rowledge} 8/LW.5. 7. 28 We are sending you herewith photostat copy of the chart giving particulars of the analysis of valve materials, mentioned in Lp. {Mr Lappin} 's memo. ref. Lp {Mr Lappin} 3/Av/D2. 7. 28. Rg. {Mr Rowledge} Att. | ||