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).
Blueprint of an extra replenishing valve housing.
| Identifier | ExFiles\Box 151\2\ scan0395 | |
| Date | 16th March 1939 | |
| BL. 85T 1.450 +10 1.000 +10 .875 DIA .437 DIA +6 .375 DIA +5 EXTRA REPLENISHING VALVE HOUSING MATERIAL S/M - 2 OFF SCALE 3/1 ROLLS-ROYCE LTD. PRINT ROOM MAR. 16 1939 DERBY | ||