The source of a picture and information.
| Identifier | ExFiles\Box 160\4\ scan0032 | |
| Date | 9th March 1939 guessed | |
| Picture taken from back of B6MR. Information from Alec Harvey-Bailey | ||
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).