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).
Hand-drawn diagram of a modification for loss of water, showing a spring-loaded valve.
| Identifier | ExFiles\Box 91\3\ scan0213 | |
| Date | 8th October 1935 guessed | |
| 7 A.{Mr Adams} VALVE SPRING MODIFICATION FOR LOSS OF WATER | ||