Index card concerning radiator steam valves for the W.III and Silver Wraith models.
| Identifier | ExFiles\Box 9\3\ 03-page114 | |
| Date | 29th June 1938 | |
| Rm. {William Robotham - Chief Engineer} 640 Da. {Bernard Day - Chassis Design} 5/G 29.6.38 Radiator Steam Valves W.III, B.3, 13.50 + Silver Wraith in file 1280 | ||
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).