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).
The manufacture of relief valves and caps for the Spectre project.
| Identifier | ExFiles\Box 96\2\ scan0046 | |
| Date | 14th June 1935 | |
| X 354 To RHC.{R. H. Coverley - Production Engineer} Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}3/KW.14.6.35. SpectreCodename for Phantom III. Will you please make the following relief valves and caps :- 4 off Hs.{Lord Ernest Hives - Chair}2035 Relief Valves. 2 off Hs.{Lord Ernest Hives - Chair}2036 Relief Valve Caps. 1 off Hs.{Lord Ernest Hives - Chair}2037 " " " 1 off Hs.{Lord Ernest Hives - Chair}2038 " " " Hs{Lord Ernest Hives - Chair}/L.H.Swindall. | ||