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 sketch of a fuel tank and a separate pipe assembly with valves and annotations.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan175 | |
| Date | 17th June 1930 guessed | |
| ORIGINAL Cox. 14 G 4. when ready: Ball valve Ball valve pull rod 1899 or to fol .2 or .1 107 10/P/30 | ||